/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:23:56,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:23:56,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:23:56,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:23:56,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:23:56,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:23:56,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:23:56,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:23:56,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:23:56,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:23:56,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:23:56,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:23:56,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:23:56,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:23:56,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:23:56,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:23:56,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:23:56,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:23:56,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:23:56,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:23:56,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:23:56,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:23:56,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:23:56,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:23:56,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:23:56,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:23:56,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:23:56,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:23:56,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:23:56,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:23:56,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:23:56,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:23:56,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:23:56,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:23:56,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:23:56,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:23:56,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:23:56,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:23:56,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:23:56,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:23:56,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:23:56,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:23:56,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:23:56,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:23:56,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:23:56,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:23:56,324 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:23:56,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:23:56,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:23:56,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:23:56,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:23:56,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:23:56,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:23:56,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:23:56,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:23:56,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:23:56,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:23:56,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:23:56,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:23:56,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:23:56,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:23:56,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:23:56,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:23:56,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:56,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:23:56,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:23:56,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:23:56,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:23:56,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:23:56,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:23:56,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:23:56,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:23:56,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:23:56,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:23:56,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:23:56,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:23:56,834 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:23:56,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 04:23:56,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aeefeb88/bafc811792234106b75afaa91b43d334/FLAG77ec4851b [2020-09-25 04:23:57,524 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:23:57,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 04:23:57,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aeefeb88/bafc811792234106b75afaa91b43d334/FLAG77ec4851b [2020-09-25 04:23:57,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aeefeb88/bafc811792234106b75afaa91b43d334 [2020-09-25 04:23:57,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:23:57,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:23:57,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:57,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:23:57,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:23:57,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:57" (1/1) ... [2020-09-25 04:23:57,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d3ce57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:57, skipping insertion in model container [2020-09-25 04:23:57,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:57" (1/1) ... [2020-09-25 04:23:57,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:23:57,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:23:58,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:58,497 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:23:58,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:58,626 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:23:58,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58 WrapperNode [2020-09-25 04:23:58,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:58,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:23:58,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:23:58,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:23:58,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... [2020-09-25 04:23:58,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:23:58,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:23:58,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:23:58,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:23:58,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:58,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:23:58,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:23:58,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:23:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:23:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:23:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:23:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:23:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:23:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:23:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:23:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:23:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:23:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:23:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:23:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:23:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:23:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:23:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:23:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:23:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:23:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:23:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:23:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:23:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:23:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:23:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:23:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:23:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:23:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:23:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:23:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:23:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:23:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:23:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:23:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:23:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:23:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:23:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:23:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:23:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:23:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:23:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:23:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:23:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:23:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:23:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:23:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:23:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:23:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:23:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:23:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:23:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:23:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:23:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:23:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:23:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:23:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:23:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:23:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:23:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:23:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:23:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:23:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:23:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:23:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:23:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:23:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:23:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:23:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:23:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:23:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:23:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:23:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:23:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:23:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:23:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:23:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:23:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:23:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:23:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:23:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:23:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:23:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:23:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:23:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:23:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:23:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:23:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:23:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:23:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:23:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:23:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:23:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:23:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:23:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:23:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:23:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:23:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:23:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:23:59,406 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:23:59,406 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 04:23:59,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:59 BoogieIcfgContainer [2020-09-25 04:23:59,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:23:59,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:23:59,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:23:59,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:23:59,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:23:57" (1/3) ... [2020-09-25 04:23:59,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e357d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:59, skipping insertion in model container [2020-09-25 04:23:59,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:58" (2/3) ... [2020-09-25 04:23:59,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e357d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:59, skipping insertion in model container [2020-09-25 04:23:59,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:59" (3/3) ... [2020-09-25 04:23:59,423 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 04:23:59,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:23:59,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 04:23:59,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 04:23:59,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:23:59,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:23:59,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:23:59,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:23:59,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:23:59,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:23:59,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:23:59,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:23:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 04:23:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 04:23:59,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:59,546 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] [2020-09-25 04:23:59,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 04:23:59,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:59,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451166878] [2020-09-25 04:23:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:00,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 04:24:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-25 04:24:00,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:00,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:24:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:00,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:00,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:00,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:00,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:00,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:24:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:00,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:00,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451166878] [2020-09-25 04:24:00,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:00,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:24:00,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492618090] [2020-09-25 04:24:00,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:24:00,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:00,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:24:00,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:24:00,512 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-09-25 04:24:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:00,763 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-09-25 04:24:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:24:00,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-25 04:24:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:00,780 INFO L225 Difference]: With dead ends: 157 [2020-09-25 04:24:00,781 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 04:24:00,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:24:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 04:24:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 04:24:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 04:24:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-25 04:24:00,842 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-09-25 04:24:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:00,842 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-25 04:24:00,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:24:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-25 04:24:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 04:24:00,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:00,844 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] [2020-09-25 04:24:00,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:00,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:00,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-09-25 04:24:00,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:00,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035038405] [2020-09-25 04:24:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:01,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:01,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:24:01,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 04:24:01,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:01,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:24:01,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:01,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:01,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:01,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:01,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:01,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:01,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:01,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035038405] [2020-09-25 04:24:01,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:01,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:24:01,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891617500] [2020-09-25 04:24:01,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:24:01,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:01,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:24:01,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:01,263 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-09-25 04:24:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:01,629 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-09-25 04:24:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:01,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 04:24:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:01,632 INFO L225 Difference]: With dead ends: 92 [2020-09-25 04:24:01,632 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 04:24:01,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 04:24:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 04:24:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:24:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 04:24:01,655 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-09-25 04:24:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:01,655 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 04:24:01,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:24:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 04:24:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:24:01,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:01,657 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] [2020-09-25 04:24:01,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:01,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 04:24:01,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:01,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032599259] [2020-09-25 04:24:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:01,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:24:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 04:24:01,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:01,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:24:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:01,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:01,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:01,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032599259] [2020-09-25 04:24:01,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:01,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:24:01,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136340222] [2020-09-25 04:24:01,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:01,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:01,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:01,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:01,918 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 04:24:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:02,128 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 04:24:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:02,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 04:24:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:02,130 INFO L225 Difference]: With dead ends: 120 [2020-09-25 04:24:02,131 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 04:24:02,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 04:24:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 04:24:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 04:24:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 04:24:02,143 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 04:24:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:02,143 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 04:24:02,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 04:24:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 04:24:02,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:02,145 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] [2020-09-25 04:24:02,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:02,146 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 04:24:02,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:02,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836970787] [2020-09-25 04:24:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:02,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:02,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:24:02,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-25 04:24:02,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:02,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 04:24:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:24:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:02,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:02,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:02,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:02,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836970787] [2020-09-25 04:24:02,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:02,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:24:02,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110911393] [2020-09-25 04:24:02,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:02,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:02,914 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 04:24:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:03,192 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 04:24:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:24:03,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 04:24:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:03,195 INFO L225 Difference]: With dead ends: 136 [2020-09-25 04:24:03,195 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 04:24:03,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 04:24:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 04:24:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 04:24:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 04:24:03,226 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 04:24:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:03,227 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 04:24:03,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 04:24:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 04:24:03,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:03,233 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:03,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:03,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 04:24:03,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:03,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783811182] [2020-09-25 04:24:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:04,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:24:04,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-09-25 04:24:04,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:04,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:24:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:24:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:04,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:04,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783811182] [2020-09-25 04:24:04,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:04,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:24:04,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971081614] [2020-09-25 04:24:04,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:24:04,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:04,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:24:04,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:24:04,784 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 04:24:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:06,004 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 04:24:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:24:06,005 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 04:24:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:06,007 INFO L225 Difference]: With dead ends: 166 [2020-09-25 04:24:06,007 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 04:24:06,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 04:24:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 04:24:06,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 04:24:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 04:24:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 04:24:06,034 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 04:24:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:06,035 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 04:24:06,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:24:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 04:24:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 04:24:06,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:06,039 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:06,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:06,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 04:24:06,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:06,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239911303] [2020-09-25 04:24:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:10,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 04:24:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:24:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:24:11,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:11,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:24:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:24:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:11,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:11,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:11,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:11,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:11,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:11,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:11,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:11,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239911303] [2020-09-25 04:24:11,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:11,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:24:11,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973889014] [2020-09-25 04:24:11,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:11,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:11,198 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-09-25 04:24:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:11,445 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2020-09-25 04:24:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:24:11,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 04:24:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:11,449 INFO L225 Difference]: With dead ends: 133 [2020-09-25 04:24:11,449 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 04:24:11,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 04:24:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-25 04:24:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 04:24:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-25 04:24:11,467 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 43 [2020-09-25 04:24:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:11,468 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-25 04:24:11,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-25 04:24:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 04:24:11,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:11,469 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:11,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:11,473 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:11,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 04:24:11,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:11,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511640165] [2020-09-25 04:24:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:24:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-09-25 04:24:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:24:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:24:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:13,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:13,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:13,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:13,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:13,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:13,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:13,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511640165] [2020-09-25 04:24:13,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:13,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 04:24:13,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697003199] [2020-09-25 04:24:13,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 04:24:13,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:13,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 04:24:13,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:13,778 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 19 states. [2020-09-25 04:24:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:15,540 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2020-09-25 04:24:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 04:24:15,541 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 04:24:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:15,542 INFO L225 Difference]: With dead ends: 169 [2020-09-25 04:24:15,543 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 04:24:15,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 04:24:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 04:24:15,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2020-09-25 04:24:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 04:24:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 04:24:15,562 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 47 [2020-09-25 04:24:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:15,563 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 04:24:15,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 04:24:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 04:24:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 04:24:15,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:15,566 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:15,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:24:15,567 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 04:24:15,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:15,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579789135] [2020-09-25 04:24:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:24:20,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:24:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 04:24:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:24:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:20,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:20,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:24:20,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579789135] [2020-09-25 04:24:20,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:20,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:24:20,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968965868] [2020-09-25 04:24:20,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:20,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:20,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:20,710 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 6 states. [2020-09-25 04:24:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:20,892 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-09-25 04:24:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:24:20,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 04:24:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:20,894 INFO L225 Difference]: With dead ends: 131 [2020-09-25 04:24:20,894 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 04:24:20,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:20,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 04:24:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 04:24:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 04:24:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 04:24:20,906 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 49 [2020-09-25 04:24:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:20,907 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 04:24:20,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 04:24:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 04:24:20,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:20,912 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:24:20,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:24:20,913 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:20,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:20,913 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 04:24:20,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:20,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768338759] [2020-09-25 04:24:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:22,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:24:22,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-09-25 04:24:22,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:22,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:24:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:24:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:23,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:23,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:23,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768338759] [2020-09-25 04:24:23,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:23,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 04:24:23,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712475028] [2020-09-25 04:24:23,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 04:24:23,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:23,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 04:24:23,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:23,089 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 04:24:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:24,608 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 04:24:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 04:24:24,608 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 04:24:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:24,610 INFO L225 Difference]: With dead ends: 186 [2020-09-25 04:24:24,610 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 04:24:24,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 04:24:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 04:24:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 04:24:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 04:24:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 04:24:24,619 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 04:24:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:24,619 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 04:24:24,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 04:24:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 04:24:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:24:24,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:24,621 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:24,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:24:24,621 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 04:24:24,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:24,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132336224] [2020-09-25 04:24:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:24:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4444 [2020-09-25 04:24:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:24:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 04:24:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 04:24:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:29,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:29,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132336224] [2020-09-25 04:24:29,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:29,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:29,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587261146] [2020-09-25 04:24:29,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:29,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:29,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:29,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:29,692 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 16 states. [2020-09-25 04:24:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:31,352 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-09-25 04:24:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 04:24:31,353 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-09-25 04:24:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:31,355 INFO L225 Difference]: With dead ends: 185 [2020-09-25 04:24:31,355 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 04:24:31,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 04:24:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 04:24:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2020-09-25 04:24:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 04:24:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 04:24:31,365 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 04:24:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:31,365 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 04:24:31,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 04:24:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 04:24:31,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:31,366 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2020-09-25 04:24:31,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:24:31,367 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 04:24:31,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:31,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793150920] [2020-09-25 04:24:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:33,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:24:33,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1842 [2020-09-25 04:24:33,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:33,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 04:24:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:24:33,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:33,966 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 04:24:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:34,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:24:34,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:34,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793150920] [2020-09-25 04:24:34,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:34,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 04:24:34,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015161391] [2020-09-25 04:24:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 04:24:34,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:34,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 04:24:34,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 04:24:34,432 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 04:24:35,015 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 04:24:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:37,479 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 04:24:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 04:24:37,480 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 04:24:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:37,482 INFO L225 Difference]: With dead ends: 163 [2020-09-25 04:24:37,482 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 04:24:37,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 04:24:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 04:24:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 04:24:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 04:24:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 04:24:37,490 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 04:24:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:37,491 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 04:24:37,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 04:24:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 04:24:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:24:37,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:37,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-09-25 04:24:37,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:24:37,492 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:37,493 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 04:24:37,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:37,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41361076] [2020-09-25 04:24:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 04:24:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:24:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 04:24:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:24:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:24:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:24:43,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:43,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:43,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:43,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:43,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41361076] [2020-09-25 04:24:43,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:43,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:24:43,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70538492] [2020-09-25 04:24:43,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:24:43,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:43,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:24:43,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:24:43,104 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 18 states. [2020-09-25 04:24:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:44,617 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2020-09-25 04:24:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 04:24:44,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-09-25 04:24:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:44,619 INFO L225 Difference]: With dead ends: 144 [2020-09-25 04:24:44,619 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 04:24:44,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=229, Invalid=1103, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 04:24:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 04:24:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2020-09-25 04:24:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 04:24:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 04:24:44,625 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 63 [2020-09-25 04:24:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:44,626 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 04:24:44,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:24:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 04:24:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:24:44,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:44,627 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:44,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:24:44,627 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:44,628 INFO L82 PathProgramCache]: Analyzing trace with hash -80620955, now seen corresponding path program 1 times [2020-09-25 04:24:44,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:44,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16658998] [2020-09-25 04:24:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking...