/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:11:57,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:11:57,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:11:57,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:11:57,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:11:57,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:11:57,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:11:57,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:11:57,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:11:57,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:11:57,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:11:57,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:11:57,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:11:57,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:11:57,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:11:57,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:11:57,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:11:57,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:11:57,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:11:57,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:11:57,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:11:57,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:11:57,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:11:57,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:11:57,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:11:57,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:11:57,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:11:57,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:11:57,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:11:57,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:11:57,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:11:57,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:11:57,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:11:57,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:11:57,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:11:57,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:11:57,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:11:57,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:11:57,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:11:57,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:11:57,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:11:57,962 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 [2020-10-14 05:11:57,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:11:57,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:11:57,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:11:57,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:11:57,995 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:11:57,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:11:57,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:11:57,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:11:57,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:11:57,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:11:57,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:11:57,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:11:57,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:11:57,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:11:57,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:11:57,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:11:57,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:11:57,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:11:57,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:11:57,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:11:57,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:11:57,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:11:57,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:11:57,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:11:57,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:11:57,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:11:58,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:11:58,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:11:58,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:11:58,000 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:11:58,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:11:58,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:11:58,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:11:58,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:11:58,294 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:11:58,295 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-10-14 05:11:58,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2785e538/fd34bfa9447e4c75909f1346da2914e4/FLAGf4f163d55 [2020-10-14 05:11:58,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:11:58,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_11.c [2020-10-14 05:11:58,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2785e538/fd34bfa9447e4c75909f1346da2914e4/FLAGf4f163d55 [2020-10-14 05:11:59,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2785e538/fd34bfa9447e4c75909f1346da2914e4 [2020-10-14 05:11:59,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:11:59,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:11:59,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:11:59,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:11:59,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:11:59,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b865e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59, skipping insertion in model container [2020-10-14 05:11:59,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:11:59,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:11:59,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:11:59,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:11:59,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:11:59,476 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:11:59,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59 WrapperNode [2020-10-14 05:11:59,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:11:59,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:11:59,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:11:59,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:11:59,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (1/1) ... [2020-10-14 05:11:59,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:11:59,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:11:59,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:11:59,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:11:59,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (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 [2020-10-14 05:11:59,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:11:59,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:11:59,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:11:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:11:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:11:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:11:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:11:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:11:59,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:11:59,943 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:11:59,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:11:59 BoogieIcfgContainer [2020-10-14 05:11:59,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:11:59,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:11:59,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:11:59,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:11:59,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:11:59" (1/3) ... [2020-10-14 05:11:59,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460667d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:11:59, skipping insertion in model container [2020-10-14 05:11:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:59" (2/3) ... [2020-10-14 05:11:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460667d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:11:59, skipping insertion in model container [2020-10-14 05:11:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:11:59" (3/3) ... [2020-10-14 05:11:59,956 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-10-14 05:11:59,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:11:59,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:11:59,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:12:00,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:12:00,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:12:00,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:12:00,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:12:00,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:12:00,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:12:00,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:12:00,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:12:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-14 05:12:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:12:00,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:00,056 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] [2020-10-14 05:12:00,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:00,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:00,063 INFO L82 PathProgramCache]: Analyzing trace with hash -316470182, now seen corresponding path program 1 times [2020-10-14 05:12:00,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:00,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365792213] [2020-10-14 05:12:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:12:00,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 05:12:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:12:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:00,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:12:00,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:12:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:00,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365792213] [2020-10-14 05:12:00,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:00,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:00,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311623451] [2020-10-14 05:12:00,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:00,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,574 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-10-14 05:12:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:00,660 INFO L93 Difference]: Finished difference Result 93 states and 162 transitions. [2020-10-14 05:12:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:00,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:12:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:00,674 INFO L225 Difference]: With dead ends: 93 [2020-10-14 05:12:00,675 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:12:00,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:12:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2020-10-14 05:12:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:12:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-10-14 05:12:00,722 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 21 [2020-10-14 05:12:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:00,723 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-10-14 05:12:00,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-10-14 05:12:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:12:00,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:00,725 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] [2020-10-14 05:12:00,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:12:00,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1327587432, now seen corresponding path program 1 times [2020-10-14 05:12:00,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:00,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251691982] [2020-10-14 05:12:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:12:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 05:12:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:00,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:00,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:00,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:00,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:00,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:00,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:00,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:00,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251691982] [2020-10-14 05:12:00,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:00,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:00,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322479452] [2020-10-14 05:12:00,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:00,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,921 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 3 states. [2020-10-14 05:12:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:00,982 INFO L93 Difference]: Finished difference Result 127 states and 232 transitions. [2020-10-14 05:12:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:00,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:12:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:00,986 INFO L225 Difference]: With dead ends: 127 [2020-10-14 05:12:00,986 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:12:00,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:12:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-14 05:12:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 05:12:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 137 transitions. [2020-10-14 05:12:01,006 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 137 transitions. Word has length 21 [2020-10-14 05:12:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,007 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 137 transitions. [2020-10-14 05:12:01,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 137 transitions. [2020-10-14 05:12:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:01,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,010 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] [2020-10-14 05:12:01,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:12:01,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1220427994, now seen corresponding path program 1 times [2020-10-14 05:12:01,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605302526] [2020-10-14 05:12:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:01,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 05:12:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:01,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605302526] [2020-10-14 05:12:01,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777130792] [2020-10-14 05:12:01,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,244 INFO L87 Difference]: Start difference. First operand 76 states and 137 transitions. Second operand 3 states. [2020-10-14 05:12:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,280 INFO L93 Difference]: Finished difference Result 145 states and 263 transitions. [2020-10-14 05:12:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,283 INFO L225 Difference]: With dead ends: 145 [2020-10-14 05:12:01,283 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 05:12:01,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 05:12:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2020-10-14 05:12:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 05:12:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 183 transitions. [2020-10-14 05:12:01,306 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 183 transitions. Word has length 22 [2020-10-14 05:12:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,306 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 183 transitions. [2020-10-14 05:12:01,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 183 transitions. [2020-10-14 05:12:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:01,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,308 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] [2020-10-14 05:12:01,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:12:01,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2063422052, now seen corresponding path program 1 times [2020-10-14 05:12:01,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305295643] [2020-10-14 05:12:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:01,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:12:01,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:01,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305295643] [2020-10-14 05:12:01,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660032259] [2020-10-14 05:12:01,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,422 INFO L87 Difference]: Start difference. First operand 101 states and 183 transitions. Second operand 3 states. [2020-10-14 05:12:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,451 INFO L93 Difference]: Finished difference Result 241 states and 441 transitions. [2020-10-14 05:12:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,454 INFO L225 Difference]: With dead ends: 241 [2020-10-14 05:12:01,455 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 05:12:01,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 05:12:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-14 05:12:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 05:12:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 258 transitions. [2020-10-14 05:12:01,478 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 258 transitions. Word has length 22 [2020-10-14 05:12:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,478 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 258 transitions. [2020-10-14 05:12:01,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 258 transitions. [2020-10-14 05:12:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:01,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,483 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] [2020-10-14 05:12:01,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:12:01,483 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,483 INFO L82 PathProgramCache]: Analyzing trace with hash 821651247, now seen corresponding path program 1 times [2020-10-14 05:12:01,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459765068] [2020-10-14 05:12:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:01,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 05:12:01,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:01,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459765068] [2020-10-14 05:12:01,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297000042] [2020-10-14 05:12:01,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,660 INFO L87 Difference]: Start difference. First operand 143 states and 258 transitions. Second operand 3 states. [2020-10-14 05:12:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,685 INFO L93 Difference]: Finished difference Result 271 states and 492 transitions. [2020-10-14 05:12:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,688 INFO L225 Difference]: With dead ends: 271 [2020-10-14 05:12:01,688 INFO L226 Difference]: Without dead ends: 269 [2020-10-14 05:12:01,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-14 05:12:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 195. [2020-10-14 05:12:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 05:12:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 350 transitions. [2020-10-14 05:12:01,710 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 350 transitions. Word has length 23 [2020-10-14 05:12:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,710 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 350 transitions. [2020-10-14 05:12:01,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 350 transitions. [2020-10-14 05:12:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:01,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,712 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] [2020-10-14 05:12:01,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:12:01,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash -189466003, now seen corresponding path program 1 times [2020-10-14 05:12:01,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481733918] [2020-10-14 05:12:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:01,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 05:12:01,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:01,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:01,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:01,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:01,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:01,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:01,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481733918] [2020-10-14 05:12:01,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:01,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:01,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624912281] [2020-10-14 05:12:01,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:01,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,873 INFO L87 Difference]: Start difference. First operand 195 states and 350 transitions. Second operand 3 states. [2020-10-14 05:12:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:01,895 INFO L93 Difference]: Finished difference Result 296 states and 527 transitions. [2020-10-14 05:12:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:01,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:01,898 INFO L225 Difference]: With dead ends: 296 [2020-10-14 05:12:01,898 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 05:12:01,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 05:12:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-10-14 05:12:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-14 05:12:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 352 transitions. [2020-10-14 05:12:01,911 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 352 transitions. Word has length 23 [2020-10-14 05:12:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:01,912 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 352 transitions. [2020-10-14 05:12:01,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 352 transitions. [2020-10-14 05:12:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:01,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:01,914 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] [2020-10-14 05:12:01,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:12:01,915 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1469329681, now seen corresponding path program 1 times [2020-10-14 05:12:01,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:01,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384257455] [2020-10-14 05:12:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:01,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 05:12:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:02,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384257455] [2020-10-14 05:12:02,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193531123] [2020-10-14 05:12:02,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,046 INFO L87 Difference]: Start difference. First operand 200 states and 352 transitions. Second operand 3 states. [2020-10-14 05:12:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,070 INFO L93 Difference]: Finished difference Result 472 states and 838 transitions. [2020-10-14 05:12:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,073 INFO L225 Difference]: With dead ends: 472 [2020-10-14 05:12:02,073 INFO L226 Difference]: Without dead ends: 282 [2020-10-14 05:12:02,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-14 05:12:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2020-10-14 05:12:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-14 05:12:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 490 transitions. [2020-10-14 05:12:02,087 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 490 transitions. Word has length 23 [2020-10-14 05:12:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,088 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 490 transitions. [2020-10-14 05:12:02,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,088 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 490 transitions. [2020-10-14 05:12:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:12:02,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:02,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:12:02,090 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1319469735, now seen corresponding path program 1 times [2020-10-14 05:12:02,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197081094] [2020-10-14 05:12:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:12:02,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 05:12:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:02,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197081094] [2020-10-14 05:12:02,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408435393] [2020-10-14 05:12:02,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,293 INFO L87 Difference]: Start difference. First operand 280 states and 490 transitions. Second operand 3 states. [2020-10-14 05:12:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,337 INFO L93 Difference]: Finished difference Result 520 states and 920 transitions. [2020-10-14 05:12:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:12:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,343 INFO L225 Difference]: With dead ends: 520 [2020-10-14 05:12:02,343 INFO L226 Difference]: Without dead ends: 518 [2020-10-14 05:12:02,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-14 05:12:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 388. [2020-10-14 05:12:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-14 05:12:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 670 transitions. [2020-10-14 05:12:02,379 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 670 transitions. Word has length 24 [2020-10-14 05:12:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,379 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 670 transitions. [2020-10-14 05:12:02,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 670 transitions. [2020-10-14 05:12:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:12:02,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:02,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:12:02,386 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1964380311, now seen corresponding path program 1 times [2020-10-14 05:12:02,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142900664] [2020-10-14 05:12:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:12:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 05:12:02,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:02,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142900664] [2020-10-14 05:12:02,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027218771] [2020-10-14 05:12:02,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,538 INFO L87 Difference]: Start difference. First operand 388 states and 670 transitions. Second operand 3 states. [2020-10-14 05:12:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,565 INFO L93 Difference]: Finished difference Result 920 states and 1600 transitions. [2020-10-14 05:12:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:12:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,571 INFO L225 Difference]: With dead ends: 920 [2020-10-14 05:12:02,571 INFO L226 Difference]: Without dead ends: 542 [2020-10-14 05:12:02,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-14 05:12:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2020-10-14 05:12:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-14 05:12:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 926 transitions. [2020-10-14 05:12:02,596 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 926 transitions. Word has length 24 [2020-10-14 05:12:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,597 INFO L479 AbstractCegarLoop]: Abstraction has 540 states and 926 transitions. [2020-10-14 05:12:02,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 926 transitions. [2020-10-14 05:12:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:02,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,598 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] [2020-10-14 05:12:02,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:12:02,598 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2046325254, now seen corresponding path program 1 times [2020-10-14 05:12:02,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070243988] [2020-10-14 05:12:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 05:12:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:02,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:02,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:02,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:02,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:02,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:02,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:02,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070243988] [2020-10-14 05:12:02,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:02,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:02,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158514670] [2020-10-14 05:12:02,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:02,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:02,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:02,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,824 INFO L87 Difference]: Start difference. First operand 540 states and 926 transitions. Second operand 3 states. [2020-10-14 05:12:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:02,860 INFO L93 Difference]: Finished difference Result 992 states and 1720 transitions. [2020-10-14 05:12:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:02,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:02,869 INFO L225 Difference]: With dead ends: 992 [2020-10-14 05:12:02,869 INFO L226 Difference]: Without dead ends: 990 [2020-10-14 05:12:02,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-14 05:12:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 764. [2020-10-14 05:12:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2020-10-14 05:12:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1286 transitions. [2020-10-14 05:12:02,906 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1286 transitions. Word has length 25 [2020-10-14 05:12:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:02,908 INFO L479 AbstractCegarLoop]: Abstraction has 764 states and 1286 transitions. [2020-10-14 05:12:02,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1286 transitions. [2020-10-14 05:12:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:02,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:02,911 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] [2020-10-14 05:12:02,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:12:02,912 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1035208004, now seen corresponding path program 1 times [2020-10-14 05:12:02,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:02,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272550302] [2020-10-14 05:12:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 05:12:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:03,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:03,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:03,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:03,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272550302] [2020-10-14 05:12:03,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:03,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:03,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604691071] [2020-10-14 05:12:03,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:03,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,136 INFO L87 Difference]: Start difference. First operand 764 states and 1286 transitions. Second operand 3 states. [2020-10-14 05:12:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:03,175 INFO L93 Difference]: Finished difference Result 1808 states and 3064 transitions. [2020-10-14 05:12:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:03,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:03,182 INFO L225 Difference]: With dead ends: 1808 [2020-10-14 05:12:03,182 INFO L226 Difference]: Without dead ends: 1054 [2020-10-14 05:12:03,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-14 05:12:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2020-10-14 05:12:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-14 05:12:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1758 transitions. [2020-10-14 05:12:03,213 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1758 transitions. Word has length 25 [2020-10-14 05:12:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:03,214 INFO L479 AbstractCegarLoop]: Abstraction has 1052 states and 1758 transitions. [2020-10-14 05:12:03,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1758 transitions. [2020-10-14 05:12:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:03,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:03,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:03,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:12:03,217 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:03,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:03,217 INFO L82 PathProgramCache]: Analyzing trace with hash -988212146, now seen corresponding path program 1 times [2020-10-14 05:12:03,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:03,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384012595] [2020-10-14 05:12:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:03,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:12:03,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 05:12:03,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:03,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:03,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:03,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384012595] [2020-10-14 05:12:03,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:03,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:03,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452523036] [2020-10-14 05:12:03,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:03,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:03,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:03,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,499 INFO L87 Difference]: Start difference. First operand 1052 states and 1758 transitions. Second operand 3 states. [2020-10-14 05:12:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:03,534 INFO L93 Difference]: Finished difference Result 1904 states and 3216 transitions. [2020-10-14 05:12:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:03,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:03,546 INFO L225 Difference]: With dead ends: 1904 [2020-10-14 05:12:03,546 INFO L226 Difference]: Without dead ends: 1902 [2020-10-14 05:12:03,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-10-14 05:12:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1516. [2020-10-14 05:12:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2020-10-14 05:12:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2478 transitions. [2020-10-14 05:12:03,616 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2478 transitions. Word has length 26 [2020-10-14 05:12:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:03,616 INFO L479 AbstractCegarLoop]: Abstraction has 1516 states and 2478 transitions. [2020-10-14 05:12:03,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2478 transitions. [2020-10-14 05:12:03,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:03,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:03,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:03,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:12:03,620 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:03,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1999329396, now seen corresponding path program 1 times [2020-10-14 05:12:03,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:03,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498449010] [2020-10-14 05:12:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:12:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 05:12:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:03,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:03,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:03,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:03,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498449010] [2020-10-14 05:12:03,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:03,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:03,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577056453] [2020-10-14 05:12:03,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:03,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:03,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:03,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,900 INFO L87 Difference]: Start difference. First operand 1516 states and 2478 transitions. Second operand 3 states. [2020-10-14 05:12:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:03,933 INFO L93 Difference]: Finished difference Result 2268 states and 3696 transitions. [2020-10-14 05:12:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:03,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:03,943 INFO L225 Difference]: With dead ends: 2268 [2020-10-14 05:12:03,944 INFO L226 Difference]: Without dead ends: 1530 [2020-10-14 05:12:03,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-14 05:12:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1528. [2020-10-14 05:12:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1528 states. [2020-10-14 05:12:04,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2454 transitions. [2020-10-14 05:12:04,012 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2454 transitions. Word has length 26 [2020-10-14 05:12:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,012 INFO L479 AbstractCegarLoop]: Abstraction has 1528 states and 2454 transitions. [2020-10-14 05:12:04,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2454 transitions. [2020-10-14 05:12:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:04,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:04,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:12:04,017 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1274569546, now seen corresponding path program 1 times [2020-10-14 05:12:04,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698501662] [2020-10-14 05:12:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:04,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:04,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 05:12:04,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:04,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:04,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698501662] [2020-10-14 05:12:04,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:04,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:04,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493000834] [2020-10-14 05:12:04,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:04,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:04,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:04,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,199 INFO L87 Difference]: Start difference. First operand 1528 states and 2454 transitions. Second operand 3 states. [2020-10-14 05:12:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:04,233 INFO L93 Difference]: Finished difference Result 2284 states and 3656 transitions. [2020-10-14 05:12:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:04,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:04,243 INFO L225 Difference]: With dead ends: 2284 [2020-10-14 05:12:04,243 INFO L226 Difference]: Without dead ends: 1546 [2020-10-14 05:12:04,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-10-14 05:12:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1544. [2020-10-14 05:12:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-10-14 05:12:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2438 transitions. [2020-10-14 05:12:04,294 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2438 transitions. Word has length 26 [2020-10-14 05:12:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,294 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 2438 transitions. [2020-10-14 05:12:04,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2438 transitions. [2020-10-14 05:12:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:04,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:04,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:12:04,298 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,298 INFO L82 PathProgramCache]: Analyzing trace with hash -5294132, now seen corresponding path program 1 times [2020-10-14 05:12:04,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281046640] [2020-10-14 05:12:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:04,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:04,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:12:04,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:04,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:04,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281046640] [2020-10-14 05:12:04,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:04,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:04,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406378045] [2020-10-14 05:12:04,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:04,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:04,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:04,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,391 INFO L87 Difference]: Start difference. First operand 1544 states and 2438 transitions. Second operand 3 states. [2020-10-14 05:12:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:04,423 INFO L93 Difference]: Finished difference Result 2284 states and 3584 transitions. [2020-10-14 05:12:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:04,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:04,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:04,432 INFO L225 Difference]: With dead ends: 2284 [2020-10-14 05:12:04,432 INFO L226 Difference]: Without dead ends: 1546 [2020-10-14 05:12:04,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-10-14 05:12:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1544. [2020-10-14 05:12:04,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-10-14 05:12:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2390 transitions. [2020-10-14 05:12:04,487 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2390 transitions. Word has length 26 [2020-10-14 05:12:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,487 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 2390 transitions. [2020-10-14 05:12:04,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2390 transitions. [2020-10-14 05:12:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:04,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:04,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:12:04,490 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1593642034, now seen corresponding path program 1 times [2020-10-14 05:12:04,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371781608] [2020-10-14 05:12:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 05:12:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:04,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:04,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:04,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371781608] [2020-10-14 05:12:04,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:04,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:04,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720387691] [2020-10-14 05:12:04,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:04,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:04,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:04,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,568 INFO L87 Difference]: Start difference. First operand 1544 states and 2390 transitions. Second operand 3 states. [2020-10-14 05:12:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:04,627 INFO L93 Difference]: Finished difference Result 3596 states and 5592 transitions. [2020-10-14 05:12:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:04,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:04,639 INFO L225 Difference]: With dead ends: 3596 [2020-10-14 05:12:04,639 INFO L226 Difference]: Without dead ends: 2090 [2020-10-14 05:12:04,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-10-14 05:12:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2088. [2020-10-14 05:12:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2020-10-14 05:12:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3206 transitions. [2020-10-14 05:12:04,728 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3206 transitions. Word has length 26 [2020-10-14 05:12:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,728 INFO L479 AbstractCegarLoop]: Abstraction has 2088 states and 3206 transitions. [2020-10-14 05:12:04,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3206 transitions. [2020-10-14 05:12:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:04,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,731 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] [2020-10-14 05:12:04,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:12:04,731 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash -878184359, now seen corresponding path program 1 times [2020-10-14 05:12:04,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454169277] [2020-10-14 05:12:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 05:12:04,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:04,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:04,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:04,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:04,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:04,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454169277] [2020-10-14 05:12:04,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:04,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:04,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704401798] [2020-10-14 05:12:04,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:04,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,823 INFO L87 Difference]: Start difference. First operand 2088 states and 3206 transitions. Second operand 3 states. [2020-10-14 05:12:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:04,875 INFO L93 Difference]: Finished difference Result 3692 states and 5768 transitions. [2020-10-14 05:12:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:04,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:04,893 INFO L225 Difference]: With dead ends: 3692 [2020-10-14 05:12:04,894 INFO L226 Difference]: Without dead ends: 3690 [2020-10-14 05:12:04,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2020-10-14 05:12:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3048. [2020-10-14 05:12:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3048 states. [2020-10-14 05:12:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4550 transitions. [2020-10-14 05:12:04,982 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4550 transitions. Word has length 27 [2020-10-14 05:12:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:04,983 INFO L479 AbstractCegarLoop]: Abstraction has 3048 states and 4550 transitions. [2020-10-14 05:12:04,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4550 transitions. [2020-10-14 05:12:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:04,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:04,988 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] [2020-10-14 05:12:04,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:12:04,988 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:04,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:04,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1889301609, now seen corresponding path program 1 times [2020-10-14 05:12:04,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:04,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98368766] [2020-10-14 05:12:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:05,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:05,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:12:05,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:05,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98368766] [2020-10-14 05:12:05,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138226431] [2020-10-14 05:12:05,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,091 INFO L87 Difference]: Start difference. First operand 3048 states and 4550 transitions. Second operand 3 states. [2020-10-14 05:12:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,143 INFO L93 Difference]: Finished difference Result 4556 states and 6776 transitions. [2020-10-14 05:12:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:05,159 INFO L225 Difference]: With dead ends: 4556 [2020-10-14 05:12:05,159 INFO L226 Difference]: Without dead ends: 3082 [2020-10-14 05:12:05,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2020-10-14 05:12:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3080. [2020-10-14 05:12:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2020-10-14 05:12:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4518 transitions. [2020-10-14 05:12:05,243 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4518 transitions. Word has length 27 [2020-10-14 05:12:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:05,243 INFO L479 AbstractCegarLoop]: Abstraction has 3080 states and 4518 transitions. [2020-10-14 05:12:05,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4518 transitions. [2020-10-14 05:12:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:05,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:05,248 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] [2020-10-14 05:12:05,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:12:05,249 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1125802009, now seen corresponding path program 1 times [2020-10-14 05:12:05,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:05,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308478130] [2020-10-14 05:12:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:12:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:05,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:05,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308478130] [2020-10-14 05:12:05,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510198566] [2020-10-14 05:12:05,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,315 INFO L87 Difference]: Start difference. First operand 3080 states and 4518 transitions. Second operand 3 states. [2020-10-14 05:12:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,364 INFO L93 Difference]: Finished difference Result 4556 states and 6632 transitions. [2020-10-14 05:12:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:05,379 INFO L225 Difference]: With dead ends: 4556 [2020-10-14 05:12:05,380 INFO L226 Difference]: Without dead ends: 3082 [2020-10-14 05:12:05,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2020-10-14 05:12:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3080. [2020-10-14 05:12:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2020-10-14 05:12:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4422 transitions. [2020-10-14 05:12:05,507 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4422 transitions. Word has length 27 [2020-10-14 05:12:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:05,507 INFO L479 AbstractCegarLoop]: Abstraction has 3080 states and 4422 transitions. [2020-10-14 05:12:05,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4422 transitions. [2020-10-14 05:12:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:05,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:05,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:05,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:12:05,514 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash 308153559, now seen corresponding path program 1 times [2020-10-14 05:12:05,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:05,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923920641] [2020-10-14 05:12:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:05,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:12:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:05,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923920641] [2020-10-14 05:12:05,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751697304] [2020-10-14 05:12:05,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,575 INFO L87 Difference]: Start difference. First operand 3080 states and 4422 transitions. Second operand 3 states. [2020-10-14 05:12:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:05,666 INFO L93 Difference]: Finished difference Result 7116 states and 10248 transitions. [2020-10-14 05:12:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:05,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:05,699 INFO L225 Difference]: With dead ends: 7116 [2020-10-14 05:12:05,699 INFO L226 Difference]: Without dead ends: 4106 [2020-10-14 05:12:05,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-10-14 05:12:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4104. [2020-10-14 05:12:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4104 states. [2020-10-14 05:12:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5830 transitions. [2020-10-14 05:12:05,811 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5830 transitions. Word has length 27 [2020-10-14 05:12:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:05,811 INFO L479 AbstractCegarLoop]: Abstraction has 4104 states and 5830 transitions. [2020-10-14 05:12:05,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:05,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5830 transitions. [2020-10-14 05:12:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:12:05,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:05,817 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] [2020-10-14 05:12:05,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:12:05,820 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2052062779, now seen corresponding path program 1 times [2020-10-14 05:12:05,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:05,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317858900] [2020-10-14 05:12:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:12:05,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:12:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:12:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:05,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:05,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:05,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:05,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:05,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:05,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:05,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:05,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:05,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317858900] [2020-10-14 05:12:05,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:05,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:05,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084479802] [2020-10-14 05:12:05,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:05,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:05,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:05,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:05,882 INFO L87 Difference]: Start difference. First operand 4104 states and 5830 transitions. Second operand 3 states. [2020-10-14 05:12:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:06,012 INFO L93 Difference]: Finished difference Result 12044 states and 16968 transitions. [2020-10-14 05:12:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:06,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 05:12:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:06,037 INFO L225 Difference]: With dead ends: 12044 [2020-10-14 05:12:06,038 INFO L226 Difference]: Without dead ends: 8010 [2020-10-14 05:12:06,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8010 states. [2020-10-14 05:12:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8010 to 8008. [2020-10-14 05:12:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8008 states. [2020-10-14 05:12:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8008 states to 8008 states and 11014 transitions. [2020-10-14 05:12:06,311 INFO L78 Accepts]: Start accepts. Automaton has 8008 states and 11014 transitions. Word has length 28 [2020-10-14 05:12:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:06,312 INFO L479 AbstractCegarLoop]: Abstraction has 8008 states and 11014 transitions. [2020-10-14 05:12:06,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8008 states and 11014 transitions. [2020-10-14 05:12:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:12:06,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:06,326 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] [2020-10-14 05:12:06,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:12:06,327 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:06,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:06,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1040945529, now seen corresponding path program 1 times [2020-10-14 05:12:06,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:06,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509666984] [2020-10-14 05:12:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:12:06,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:12:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:12:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:06,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:06,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509666984] [2020-10-14 05:12:06,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:06,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:06,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674312511] [2020-10-14 05:12:06,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:06,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:06,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:06,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:06,388 INFO L87 Difference]: Start difference. First operand 8008 states and 11014 transitions. Second operand 3 states. [2020-10-14 05:12:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:06,519 INFO L93 Difference]: Finished difference Result 9036 states and 12808 transitions. [2020-10-14 05:12:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:06,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 05:12:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:06,547 INFO L225 Difference]: With dead ends: 9036 [2020-10-14 05:12:06,547 INFO L226 Difference]: Without dead ends: 9034 [2020-10-14 05:12:06,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2020-10-14 05:12:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 8008. [2020-10-14 05:12:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8008 states. [2020-10-14 05:12:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8008 states to 8008 states and 10886 transitions. [2020-10-14 05:12:06,792 INFO L78 Accepts]: Start accepts. Automaton has 8008 states and 10886 transitions. Word has length 28 [2020-10-14 05:12:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:06,792 INFO L479 AbstractCegarLoop]: Abstraction has 8008 states and 10886 transitions. [2020-10-14 05:12:06,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8008 states and 10886 transitions. [2020-10-14 05:12:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:06,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:06,802 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] [2020-10-14 05:12:06,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:12:06,803 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:06,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash 810778734, now seen corresponding path program 1 times [2020-10-14 05:12:06,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:06,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817788232] [2020-10-14 05:12:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:06,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:12:06,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:06,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:06,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:06,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:06,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:06,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:06,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:06,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817788232] [2020-10-14 05:12:06,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:06,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:06,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69109064] [2020-10-14 05:12:06,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:06,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:06,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:06,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:06,895 INFO L87 Difference]: Start difference. First operand 8008 states and 10886 transitions. Second operand 3 states. [2020-10-14 05:12:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:07,151 INFO L93 Difference]: Finished difference Result 13644 states and 18824 transitions. [2020-10-14 05:12:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:07,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:07,177 INFO L225 Difference]: With dead ends: 13644 [2020-10-14 05:12:07,178 INFO L226 Difference]: Without dead ends: 13642 [2020-10-14 05:12:07,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13642 states. [2020-10-14 05:12:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13642 to 12104. [2020-10-14 05:12:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12104 states. [2020-10-14 05:12:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12104 states to 12104 states and 16006 transitions. [2020-10-14 05:12:07,449 INFO L78 Accepts]: Start accepts. Automaton has 12104 states and 16006 transitions. Word has length 29 [2020-10-14 05:12:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:07,450 INFO L479 AbstractCegarLoop]: Abstraction has 12104 states and 16006 transitions. [2020-10-14 05:12:07,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 12104 states and 16006 transitions. [2020-10-14 05:12:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:07,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:07,466 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] [2020-10-14 05:12:07,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:12:07,467 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash -200338516, now seen corresponding path program 1 times [2020-10-14 05:12:07,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:07,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355457488] [2020-10-14 05:12:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:07,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:07,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:12:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:07,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:07,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:07,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:07,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:07,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:07,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:07,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355457488] [2020-10-14 05:12:07,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:07,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:07,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664902166] [2020-10-14 05:12:07,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:07,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:07,535 INFO L87 Difference]: Start difference. First operand 12104 states and 16006 transitions. Second operand 3 states. [2020-10-14 05:12:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:07,747 INFO L93 Difference]: Finished difference Result 18060 states and 23752 transitions. [2020-10-14 05:12:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:07,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:07,766 INFO L225 Difference]: With dead ends: 18060 [2020-10-14 05:12:07,766 INFO L226 Difference]: Without dead ends: 12170 [2020-10-14 05:12:07,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2020-10-14 05:12:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 12168. [2020-10-14 05:12:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2020-10-14 05:12:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 15750 transitions. [2020-10-14 05:12:08,020 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 15750 transitions. Word has length 29 [2020-10-14 05:12:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:08,020 INFO L479 AbstractCegarLoop]: Abstraction has 12168 states and 15750 transitions. [2020-10-14 05:12:08,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 15750 transitions. [2020-10-14 05:12:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:08,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:08,037 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] [2020-10-14 05:12:08,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:12:08,038 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:08,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1221406870, now seen corresponding path program 1 times [2020-10-14 05:12:08,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:08,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846848670] [2020-10-14 05:12:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:08,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:08,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:12:08,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:08,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:08,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:08,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:08,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:08,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:08,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:08,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846848670] [2020-10-14 05:12:08,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:08,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:08,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607856567] [2020-10-14 05:12:08,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:08,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:08,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:08,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:08,097 INFO L87 Difference]: Start difference. First operand 12168 states and 15750 transitions. Second operand 3 states. [2020-10-14 05:12:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:08,277 INFO L93 Difference]: Finished difference Result 27788 states and 35976 transitions. [2020-10-14 05:12:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:08,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:08,304 INFO L225 Difference]: With dead ends: 27788 [2020-10-14 05:12:08,305 INFO L226 Difference]: Without dead ends: 15754 [2020-10-14 05:12:08,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2020-10-14 05:12:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15752. [2020-10-14 05:12:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15752 states. [2020-10-14 05:12:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15752 states to 15752 states and 19974 transitions. [2020-10-14 05:12:09,104 INFO L78 Accepts]: Start accepts. Automaton has 15752 states and 19974 transitions. Word has length 29 [2020-10-14 05:12:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:09,104 INFO L479 AbstractCegarLoop]: Abstraction has 15752 states and 19974 transitions. [2020-10-14 05:12:09,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 15752 states and 19974 transitions. [2020-10-14 05:12:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:12:09,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:09,122 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] [2020-10-14 05:12:09,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:12:09,122 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2071172156, now seen corresponding path program 1 times [2020-10-14 05:12:09,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:09,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235450514] [2020-10-14 05:12:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:12:09,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:12:09,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:09,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:09,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:09,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:09,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:09,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:09,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:09,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:09,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:09,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235450514] [2020-10-14 05:12:09,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:09,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:09,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412284242] [2020-10-14 05:12:09,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:09,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:09,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:09,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:09,192 INFO L87 Difference]: Start difference. First operand 15752 states and 19974 transitions. Second operand 3 states. [2020-10-14 05:12:09,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:09,441 INFO L93 Difference]: Finished difference Result 26252 states and 33544 transitions. [2020-10-14 05:12:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:09,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 05:12:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:09,502 INFO L225 Difference]: With dead ends: 26252 [2020-10-14 05:12:09,503 INFO L226 Difference]: Without dead ends: 26250 [2020-10-14 05:12:09,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26250 states. [2020-10-14 05:12:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26250 to 24200. [2020-10-14 05:12:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24200 states. [2020-10-14 05:12:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24200 states to 24200 states and 29958 transitions. [2020-10-14 05:12:09,989 INFO L78 Accepts]: Start accepts. Automaton has 24200 states and 29958 transitions. Word has length 30 [2020-10-14 05:12:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:09,990 INFO L479 AbstractCegarLoop]: Abstraction has 24200 states and 29958 transitions. [2020-10-14 05:12:09,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 24200 states and 29958 transitions. [2020-10-14 05:12:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:12:10,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:10,024 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] [2020-10-14 05:12:10,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:12:10,024 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:10,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1060054906, now seen corresponding path program 1 times [2020-10-14 05:12:10,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:10,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769888773] [2020-10-14 05:12:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:10,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:12:10,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:12:10,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:10,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:10,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:10,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:10,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:10,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:10,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:10,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:10,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769888773] [2020-10-14 05:12:10,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:10,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:10,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022751688] [2020-10-14 05:12:10,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:10,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:10,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:10,086 INFO L87 Difference]: Start difference. First operand 24200 states and 29958 transitions. Second operand 3 states. [2020-10-14 05:12:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:10,260 INFO L93 Difference]: Finished difference Result 36364 states and 44936 transitions. [2020-10-14 05:12:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:10,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 05:12:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:10,304 INFO L225 Difference]: With dead ends: 36364 [2020-10-14 05:12:10,305 INFO L226 Difference]: Without dead ends: 24586 [2020-10-14 05:12:10,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24586 states. [2020-10-14 05:12:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24586 to 24584. [2020-10-14 05:12:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24584 states. [2020-10-14 05:12:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 29958 transitions. [2020-10-14 05:12:10,903 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 29958 transitions. Word has length 30 [2020-10-14 05:12:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:10,903 INFO L479 AbstractCegarLoop]: Abstraction has 24584 states and 29958 transitions. [2020-10-14 05:12:10,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 29958 transitions. [2020-10-14 05:12:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:12:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:10,926 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] [2020-10-14 05:12:10,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:12:10,926 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash -219808772, now seen corresponding path program 1 times [2020-10-14 05:12:10,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:10,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649227584] [2020-10-14 05:12:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:10,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:10,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:12:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:12:10,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:10,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:10,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649227584] [2020-10-14 05:12:10,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:10,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:10,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797498816] [2020-10-14 05:12:10,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:10,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:10,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:10,970 INFO L87 Difference]: Start difference. First operand 24584 states and 29958 transitions. Second operand 3 states. [2020-10-14 05:12:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:11,274 INFO L93 Difference]: Finished difference Result 55308 states and 66824 transitions. [2020-10-14 05:12:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:11,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 05:12:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:11,342 INFO L225 Difference]: With dead ends: 55308 [2020-10-14 05:12:11,342 INFO L226 Difference]: Without dead ends: 31242 [2020-10-14 05:12:11,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:11,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31242 states. [2020-10-14 05:12:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31242 to 31240. [2020-10-14 05:12:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31240 states. [2020-10-14 05:12:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31240 states to 31240 states and 36870 transitions. [2020-10-14 05:12:12,620 INFO L78 Accepts]: Start accepts. Automaton has 31240 states and 36870 transitions. Word has length 30 [2020-10-14 05:12:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:12,621 INFO L479 AbstractCegarLoop]: Abstraction has 31240 states and 36870 transitions. [2020-10-14 05:12:12,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 31240 states and 36870 transitions. [2020-10-14 05:12:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:12:12,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:12,660 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] [2020-10-14 05:12:12,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:12:12,661 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1239024833, now seen corresponding path program 1 times [2020-10-14 05:12:12,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:12,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451091162] [2020-10-14 05:12:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:12,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:12,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:12:12,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:12:12,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:12,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:12:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:12,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:12,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:12,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:12,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:12,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451091162] [2020-10-14 05:12:12,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:12,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:12,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039691610] [2020-10-14 05:12:12,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:12,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:12,719 INFO L87 Difference]: Start difference. First operand 31240 states and 36870 transitions. Second operand 3 states. [2020-10-14 05:12:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:13,173 INFO L93 Difference]: Finished difference Result 50698 states and 59399 transitions. [2020-10-14 05:12:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:13,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 05:12:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:13,260 INFO L225 Difference]: With dead ends: 50698 [2020-10-14 05:12:13,260 INFO L226 Difference]: Without dead ends: 50696 [2020-10-14 05:12:13,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50696 states. [2020-10-14 05:12:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50696 to 48648. [2020-10-14 05:12:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48648 states. [2020-10-14 05:12:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48648 states to 48648 states and 56326 transitions. [2020-10-14 05:12:14,153 INFO L78 Accepts]: Start accepts. Automaton has 48648 states and 56326 transitions. Word has length 31 [2020-10-14 05:12:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:14,153 INFO L479 AbstractCegarLoop]: Abstraction has 48648 states and 56326 transitions. [2020-10-14 05:12:14,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 48648 states and 56326 transitions. [2020-10-14 05:12:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:12:14,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:14,188 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] [2020-10-14 05:12:14,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:12:14,189 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:14,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2044825213, now seen corresponding path program 1 times [2020-10-14 05:12:14,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:14,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068058552] [2020-10-14 05:12:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:14,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:12:14,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:12:14,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:14,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:12:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:12:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:14,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:14,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:14,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:14,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068058552] [2020-10-14 05:12:14,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:14,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:14,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832946325] [2020-10-14 05:12:14,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:14,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:14,243 INFO L87 Difference]: Start difference. First operand 48648 states and 56326 transitions. Second operand 3 states. [2020-10-14 05:12:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:15,237 INFO L93 Difference]: Finished difference Result 109064 states and 124934 transitions. [2020-10-14 05:12:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:15,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 05:12:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:15,238 INFO L225 Difference]: With dead ends: 109064 [2020-10-14 05:12:15,238 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:12:15,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:12:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:12:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:12:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:12:15,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-14 05:12:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:15,311 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:12:15,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:12:15,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:12:15,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:12:15,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:12:15,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:12:15,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:15,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:15,347 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:12:15,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 177) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L264 CegarLoopResult]: At program point L168-1(lines 5 177) the Hoare annotation is: false [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point L127-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,348 INFO L268 CegarLoopResult]: For program point L152-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L111-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L103-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L95-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L87-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L79-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 177) no Hoare annotation was computed. [2020-10-14 05:12:15,349 INFO L268 CegarLoopResult]: For program point L137-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,350 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-10-14 05:12:15,350 INFO L268 CegarLoopResult]: For program point L71-2(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,350 INFO L268 CegarLoopResult]: For program point L162-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,351 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 177) the Hoare annotation is: true [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L122-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L147-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-10-14 05:12:15,352 INFO L271 CegarLoopResult]: At program point L173(lines 5 177) the Hoare annotation is: true [2020-10-14 05:12:15,352 INFO L268 CegarLoopResult]: For program point L107-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L132-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L99-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L157-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L91-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L83-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L75-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-10-14 05:12:15,353 INFO L268 CegarLoopResult]: For program point L117-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,354 INFO L268 CegarLoopResult]: For program point L142-1(lines 42 172) no Hoare annotation was computed. [2020-10-14 05:12:15,354 INFO L271 CegarLoopResult]: At program point L167-1(lines 42 172) the Hoare annotation is: true [2020-10-14 05:12:15,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:12:15 BoogieIcfgContainer [2020-10-14 05:12:15,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:12:15,370 INFO L168 Benchmark]: Toolchain (without parser) took 16185.86 ms. Allocated memory was 147.3 MB in the beginning and 986.2 MB in the end (delta: 838.9 MB). Free memory was 103.2 MB in the beginning and 476.0 MB in the end (delta: -372.9 MB). Peak memory consumption was 466.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:15,371 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 05:12:15,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.17 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 92.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:15,376 INFO L168 Benchmark]: Boogie Preprocessor took 120.93 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:15,377 INFO L168 Benchmark]: RCFGBuilder took 349.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 161.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:15,377 INFO L168 Benchmark]: TraceAbstraction took 15419.22 ms. Allocated memory was 203.9 MB in the beginning and 986.2 MB in the end (delta: 782.2 MB). Free memory was 160.2 MB in the beginning and 476.0 MB in the end (delta: -315.8 MB). Peak memory consumption was 466.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:15,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.17 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 92.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.93 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 161.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15419.22 ms. Allocated memory was 203.9 MB in the beginning and 986.2 MB in the end (delta: 782.2 MB). Free memory was 160.2 MB in the beginning and 476.0 MB in the end (delta: -315.8 MB). Peak memory consumption was 466.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.2s, OverallIterations: 30, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2771 SDtfs, 1350 SDslu, 1900 SDs, 0 SdLazy, 160 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48648occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.8s AutomataMinimizationTime, 30 MinimizatonAttempts, 8222 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 2058 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 786 NumberOfCodeBlocks, 786 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 38754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...