/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/eca-rers2012/Problem11_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:55:18,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:55:18,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:55:18,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:55:18,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:55:18,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:55:18,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:55:18,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:55:18,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:55:18,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:55:18,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:55:18,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:55:18,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:55:18,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:55:18,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:55:18,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:55:18,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:55:18,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:55:18,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:55:18,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:55:18,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:55:18,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:55:18,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:55:18,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:55:18,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:55:18,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:55:18,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:55:18,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:55:18,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:55:18,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:55:18,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:55:18,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:55:18,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:55:18,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:55:18,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:55:18,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:55:18,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:55:18,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:55:18,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:55:18,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:55:18,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:55:18,941 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 20:55:18,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:55:18,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:55:18,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:55:18,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:55:18,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:55:18,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:55:18,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:55:18,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:55:18,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:55:18,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:55:18,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:55:18,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:55:18,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:55:18,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:55:18,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:55:18,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:55:18,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:55:18,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:55:18,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:55:18,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:55:18,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:55:18,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:55:18,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:55:18,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:55:18,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:55:18,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:55:18,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:55:18,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:55:18,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:55:18,995 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:55:19,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:55:19,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:55:19,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:55:19,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:55:19,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:55:19,336 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2020-10-14 20:55:19,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30a9e639c/692602ca8c6a4e89ba5e5200920e592f/FLAGe4caa6c97 [2020-10-14 20:55:19,967 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:55:19,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2020-10-14 20:55:19,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30a9e639c/692602ca8c6a4e89ba5e5200920e592f/FLAGe4caa6c97 [2020-10-14 20:55:20,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30a9e639c/692602ca8c6a4e89ba5e5200920e592f [2020-10-14 20:55:20,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:55:20,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:55:20,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:55:20,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:55:20,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:55:20,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:20" (1/1) ... [2020-10-14 20:55:20,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454cf358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:20, skipping insertion in model container [2020-10-14 20:55:20,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:20" (1/1) ... [2020-10-14 20:55:20,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:55:20,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:55:21,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:55:21,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:55:21,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:55:21,330 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:55:21,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21 WrapperNode [2020-10-14 20:55:21,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:55:21,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:55:21,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:55:21,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:55:21,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (1/1) ... [2020-10-14 20:55:21,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:55:21,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:55:21,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:55:21,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:55:21,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (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 20:55:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:55:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:55:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:55:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:55:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:55:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:55:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:55:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:55:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:55:21,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:55:21,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:55:23,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:55:23,609 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:55:23,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:23 BoogieIcfgContainer [2020-10-14 20:55:23,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:55:23,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:55:23,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:55:23,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:55:23,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:55:20" (1/3) ... [2020-10-14 20:55:23,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d38c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:23, skipping insertion in model container [2020-10-14 20:55:23,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:21" (2/3) ... [2020-10-14 20:55:23,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d38c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:23, skipping insertion in model container [2020-10-14 20:55:23,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:23" (3/3) ... [2020-10-14 20:55:23,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label07.c [2020-10-14 20:55:23,665 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:55:23,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:55:23,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:55:23,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:55:23,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:55:23,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:55:23,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:55:23,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:55:23,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:55:23,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:55:23,717 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:55:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 20:55:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 20:55:23,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:23,750 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 20:55:23,751 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:23,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:23,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1280127794, now seen corresponding path program 1 times [2020-10-14 20:55:23,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:23,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663350337] [2020-10-14 20:55:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:24,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:24,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 20:55:24,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 20:55:24,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:24,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:55:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 20:55:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:55:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:24,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:24,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 20:55:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:24,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:24,408 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 20:55:24,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663350337] [2020-10-14 20:55:24,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:55:24,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 20:55:24,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554214762] [2020-10-14 20:55:24,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 20:55:24,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 20:55:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 20:55:24,442 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 20:55:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:26,799 INFO L93 Difference]: Finished difference Result 805 states and 1402 transitions. [2020-10-14 20:55:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:55:26,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 20:55:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:26,819 INFO L225 Difference]: With dead ends: 805 [2020-10-14 20:55:26,820 INFO L226 Difference]: Without dead ends: 433 [2020-10-14 20:55:26,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:55:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-14 20:55:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 424. [2020-10-14 20:55:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-14 20:55:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 611 transitions. [2020-10-14 20:55:26,911 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 611 transitions. Word has length 29 [2020-10-14 20:55:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:26,912 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 611 transitions. [2020-10-14 20:55:26,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 20:55:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 611 transitions. [2020-10-14 20:55:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 20:55:26,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:26,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:26,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:55:26,918 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash 430709074, now seen corresponding path program 1 times [2020-10-14 20:55:26,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:26,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134287472] [2020-10-14 20:55:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:55:28,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-10-14 20:55:28,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:55:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 20:55:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:55:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:28,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:55:28,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:28,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 20:55:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 20:55:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:55:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 20:55:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:55:28,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134287472] [2020-10-14 20:55:28,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:55:28,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:55:28,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365467320] [2020-10-14 20:55:28,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:28,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:28,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:28,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:28,718 INFO L87 Difference]: Start difference. First operand 424 states and 611 transitions. Second operand 7 states. [2020-10-14 20:55:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:31,467 INFO L93 Difference]: Finished difference Result 1289 states and 1929 transitions. [2020-10-14 20:55:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:55:31,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-14 20:55:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:31,477 INFO L225 Difference]: With dead ends: 1289 [2020-10-14 20:55:31,478 INFO L226 Difference]: Without dead ends: 871 [2020-10-14 20:55:31,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:55:31,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-14 20:55:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 817. [2020-10-14 20:55:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-10-14 20:55:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1097 transitions. [2020-10-14 20:55:31,548 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1097 transitions. Word has length 101 [2020-10-14 20:55:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:31,548 INFO L479 AbstractCegarLoop]: Abstraction has 817 states and 1097 transitions. [2020-10-14 20:55:31,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1097 transitions. [2020-10-14 20:55:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 20:55:31,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:31,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:31,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:55:31,551 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1293296165, now seen corresponding path program 1 times [2020-10-14 20:55:31,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:31,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712787255] [2020-10-14 20:55:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:32,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:32,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 20:55:32,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:55:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-14 20:55:32,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:32,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:55:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:55:32,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:32,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:32,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:32,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:32,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 20:55:32,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:32,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 20:55:32,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:32,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:55:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:55:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712787255] [2020-10-14 20:55:32,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:55:32,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:55:32,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44812331] [2020-10-14 20:55:32,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:32,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:32,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:32,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:32,662 INFO L87 Difference]: Start difference. First operand 817 states and 1097 transitions. Second operand 7 states. [2020-10-14 20:55:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:35,233 INFO L93 Difference]: Finished difference Result 2069 states and 2926 transitions. [2020-10-14 20:55:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:55:35,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 20:55:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:35,249 INFO L225 Difference]: With dead ends: 2069 [2020-10-14 20:55:35,250 INFO L226 Difference]: Without dead ends: 1258 [2020-10-14 20:55:35,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:55:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-14 20:55:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1210. [2020-10-14 20:55:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-10-14 20:55:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1530 transitions. [2020-10-14 20:55:35,326 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1530 transitions. Word has length 104 [2020-10-14 20:55:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:35,327 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1530 transitions. [2020-10-14 20:55:35,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1530 transitions. [2020-10-14 20:55:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 20:55:35,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:35,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:35,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:55:35,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:35,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1129088726, now seen corresponding path program 1 times [2020-10-14 20:55:35,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:35,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694558999] [2020-10-14 20:55:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 20:55:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-14 20:55:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:35,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:55:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 20:55:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:35,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:35,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:55:35,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:35,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:36,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:55:36,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 20:55:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:36,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:55:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:55:36,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694558999] [2020-10-14 20:55:36,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:36,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:55:36,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952386038] [2020-10-14 20:55:36,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:55:36,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:36,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:55:36,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:55:36,199 INFO L87 Difference]: Start difference. First operand 1210 states and 1530 transitions. Second operand 6 states. [2020-10-14 20:55:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:38,931 INFO L93 Difference]: Finished difference Result 3038 states and 4141 transitions. [2020-10-14 20:55:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:55:38,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-14 20:55:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:38,952 INFO L225 Difference]: With dead ends: 3038 [2020-10-14 20:55:38,953 INFO L226 Difference]: Without dead ends: 2212 [2020-10-14 20:55:38,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:55:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2020-10-14 20:55:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2194. [2020-10-14 20:55:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-10-14 20:55:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2789 transitions. [2020-10-14 20:55:39,018 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2789 transitions. Word has length 160 [2020-10-14 20:55:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:39,019 INFO L479 AbstractCegarLoop]: Abstraction has 2194 states and 2789 transitions. [2020-10-14 20:55:39,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:55:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2789 transitions. [2020-10-14 20:55:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 20:55:39,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:39,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:39,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:55:39,024 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:39,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1797411416, now seen corresponding path program 1 times [2020-10-14 20:55:39,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:39,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319311576] [2020-10-14 20:55:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:39,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:40,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:40,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 20:55:40,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-10-14 20:55:40,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:40,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:55:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:55:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:40,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:40,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:55:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:40,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:40,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:41,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:41,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:41,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 20:55:41,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:41,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:55:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:41,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 20:55:41,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 20:55:41,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:41,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:55:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:55:41,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319311576] [2020-10-14 20:55:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:41,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:55:41,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169560418] [2020-10-14 20:55:41,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:41,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:41,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:41,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:41,383 INFO L87 Difference]: Start difference. First operand 2194 states and 2789 transitions. Second operand 7 states. [2020-10-14 20:55:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:43,826 INFO L93 Difference]: Finished difference Result 4804 states and 6384 transitions. [2020-10-14 20:55:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:55:43,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-14 20:55:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:43,842 INFO L225 Difference]: With dead ends: 4804 [2020-10-14 20:55:43,842 INFO L226 Difference]: Without dead ends: 2994 [2020-10-14 20:55:43,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:55:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-10-14 20:55:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2976. [2020-10-14 20:55:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2976 states. [2020-10-14 20:55:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 3946 transitions. [2020-10-14 20:55:43,923 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 3946 transitions. Word has length 217 [2020-10-14 20:55:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:43,924 INFO L479 AbstractCegarLoop]: Abstraction has 2976 states and 3946 transitions. [2020-10-14 20:55:43,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 3946 transitions. [2020-10-14 20:55:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 20:55:43,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:43,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:43,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:55:43,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash 145723451, now seen corresponding path program 1 times [2020-10-14 20:55:43,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:43,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500824897] [2020-10-14 20:55:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:46,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:46,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 20:55:46,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2362 [2020-10-14 20:55:46,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:46,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:55:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 20:55:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 20:55:46,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:46,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:46,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:46,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 20:55:46,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:46,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:46,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:46,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:46,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:55:46,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 20:55:46,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:46,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:55:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:46,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:47,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:47,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:55:47,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 20:55:47,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:47,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:55:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:55:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 20:55:47,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500824897] [2020-10-14 20:55:47,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:47,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:55:47,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571814575] [2020-10-14 20:55:47,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:55:47,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:55:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:55:47,315 INFO L87 Difference]: Start difference. First operand 2976 states and 3946 transitions. Second operand 8 states. [2020-10-14 20:55:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:50,106 INFO L93 Difference]: Finished difference Result 4217 states and 5771 transitions. [2020-10-14 20:55:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:55:50,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-14 20:55:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:50,119 INFO L225 Difference]: With dead ends: 4217 [2020-10-14 20:55:50,119 INFO L226 Difference]: Without dead ends: 2200 [2020-10-14 20:55:50,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:55:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2020-10-14 20:55:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2185. [2020-10-14 20:55:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-10-14 20:55:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2715 transitions. [2020-10-14 20:55:50,182 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2715 transitions. Word has length 218 [2020-10-14 20:55:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:50,183 INFO L479 AbstractCegarLoop]: Abstraction has 2185 states and 2715 transitions. [2020-10-14 20:55:50,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:55:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2715 transitions. [2020-10-14 20:55:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 20:55:50,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:50,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:50,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:55:50,187 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:50,188 INFO L82 PathProgramCache]: Analyzing trace with hash 34492860, now seen corresponding path program 1 times [2020-10-14 20:55:50,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:50,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318038474] [2020-10-14 20:55:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:52,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 20:55:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-14 20:55:52,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:52,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:55:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 20:55:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:52,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:52,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:55:52,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:52,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:52,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:52,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:52,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 20:55:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:52,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:55:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:52,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:52,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 20:55:52,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:52,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 20:55:52,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:52,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:55:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:55:52,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318038474] [2020-10-14 20:55:52,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:52,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:55:52,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873777281] [2020-10-14 20:55:52,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:52,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:52,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:52,672 INFO L87 Difference]: Start difference. First operand 2185 states and 2715 transitions. Second operand 7 states. [2020-10-14 20:55:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:55,738 INFO L93 Difference]: Finished difference Result 4616 states and 5892 transitions. [2020-10-14 20:55:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:55:55,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 20:55:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:55,751 INFO L225 Difference]: With dead ends: 4616 [2020-10-14 20:55:55,752 INFO L226 Difference]: Without dead ends: 2815 [2020-10-14 20:55:55,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:55:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2020-10-14 20:55:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2796. [2020-10-14 20:55:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2796 states. [2020-10-14 20:55:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3437 transitions. [2020-10-14 20:55:55,823 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3437 transitions. Word has length 219 [2020-10-14 20:55:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:55,823 INFO L479 AbstractCegarLoop]: Abstraction has 2796 states and 3437 transitions. [2020-10-14 20:55:55,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3437 transitions. [2020-10-14 20:55:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 20:55:55,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:55,828 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:55:55,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:55:55,829 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:55,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:55,829 INFO L82 PathProgramCache]: Analyzing trace with hash 220944048, now seen corresponding path program 1 times [2020-10-14 20:55:55,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:55,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831416870] [2020-10-14 20:55:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:56,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:56,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:56,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 20:55:56,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:55:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-14 20:55:56,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:56,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 20:55:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 20:55:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:55:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:56,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:56,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:56,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:56,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:55:56,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:56,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:57,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:57,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 20:55:57,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:57,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:57,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:57,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 20:55:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 20:55:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:57,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 20:55:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 20:55:57,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831416870] [2020-10-14 20:55:57,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:57,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:55:57,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224574556] [2020-10-14 20:55:57,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:55:57,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:57,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:55:57,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:55:57,219 INFO L87 Difference]: Start difference. First operand 2796 states and 3437 transitions. Second operand 5 states. [2020-10-14 20:55:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:59,506 INFO L93 Difference]: Finished difference Result 5027 states and 6341 transitions. [2020-10-14 20:55:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:55:59,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-14 20:55:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:59,522 INFO L225 Difference]: With dead ends: 5027 [2020-10-14 20:55:59,522 INFO L226 Difference]: Without dead ends: 3395 [2020-10-14 20:55:59,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:55:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2020-10-14 20:55:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3372. [2020-10-14 20:55:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3372 states. [2020-10-14 20:55:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 4237 transitions. [2020-10-14 20:55:59,609 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 4237 transitions. Word has length 229 [2020-10-14 20:55:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:59,609 INFO L479 AbstractCegarLoop]: Abstraction has 3372 states and 4237 transitions. [2020-10-14 20:55:59,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:55:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 4237 transitions. [2020-10-14 20:55:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 20:55:59,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:59,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:59,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 20:55:59,648 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:59,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:59,648 INFO L82 PathProgramCache]: Analyzing trace with hash 728904806, now seen corresponding path program 1 times [2020-10-14 20:55:59,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:59,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283130953] [2020-10-14 20:55:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:59,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:01,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 20:56:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-14 20:56:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:01,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:56:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:01,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:01,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:01,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:01,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:01,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:01,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:01,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:01,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:01,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:01,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:01,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 20:56:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:01,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:01,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 20:56:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 20:56:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:01,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 20:56:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:01,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283130953] [2020-10-14 20:56:01,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:01,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:01,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826664131] [2020-10-14 20:56:01,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:01,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:01,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:01,982 INFO L87 Difference]: Start difference. First operand 3372 states and 4237 transitions. Second operand 7 states. [2020-10-14 20:56:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:05,149 INFO L93 Difference]: Finished difference Result 6444 states and 8158 transitions. [2020-10-14 20:56:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:56:05,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-14 20:56:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:05,164 INFO L225 Difference]: With dead ends: 6444 [2020-10-14 20:56:05,164 INFO L226 Difference]: Without dead ends: 3456 [2020-10-14 20:56:05,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2020-10-14 20:56:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 3416. [2020-10-14 20:56:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3416 states. [2020-10-14 20:56:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4197 transitions. [2020-10-14 20:56:05,246 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4197 transitions. Word has length 230 [2020-10-14 20:56:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:05,247 INFO L479 AbstractCegarLoop]: Abstraction has 3416 states and 4197 transitions. [2020-10-14 20:56:05,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4197 transitions. [2020-10-14 20:56:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 20:56:05,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:05,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:05,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 20:56:05,252 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:05,252 INFO L82 PathProgramCache]: Analyzing trace with hash 916369709, now seen corresponding path program 1 times [2020-10-14 20:56:05,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:05,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893387677] [2020-10-14 20:56:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 20:56:06,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-14 20:56:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:06,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 20:56:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:06,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:06,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:06,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:06,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:06,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:06,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:06,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 20:56:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:06,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:06,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:06,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:06,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 20:56:06,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:06,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 20:56:06,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:06,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:56:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:06,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893387677] [2020-10-14 20:56:06,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:06,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:06,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975441812] [2020-10-14 20:56:06,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:06,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:06,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:06,738 INFO L87 Difference]: Start difference. First operand 3416 states and 4197 transitions. Second operand 7 states. [2020-10-14 20:56:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:10,578 INFO L93 Difference]: Finished difference Result 8282 states and 10506 transitions. [2020-10-14 20:56:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:10,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-14 20:56:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:10,606 INFO L225 Difference]: With dead ends: 8282 [2020-10-14 20:56:10,606 INFO L226 Difference]: Without dead ends: 5250 [2020-10-14 20:56:10,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2020-10-14 20:56:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5220. [2020-10-14 20:56:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2020-10-14 20:56:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 6484 transitions. [2020-10-14 20:56:10,731 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 6484 transitions. Word has length 235 [2020-10-14 20:56:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:10,731 INFO L479 AbstractCegarLoop]: Abstraction has 5220 states and 6484 transitions. [2020-10-14 20:56:10,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 6484 transitions. [2020-10-14 20:56:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 20:56:10,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:10,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:10,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 20:56:10,738 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1370177823, now seen corresponding path program 1 times [2020-10-14 20:56:10,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:10,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505600663] [2020-10-14 20:56:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:10,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:11,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:11,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 20:56:11,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-14 20:56:11,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:11,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 20:56:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 20:56:11,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:11,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:11,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:11,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:11,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:11,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:11,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:11,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:56:11,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 20:56:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:11,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:56:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:11,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:11,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 20:56:11,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 20:56:11,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:11,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 20:56:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 20:56:11,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505600663] [2020-10-14 20:56:11,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:11,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:56:11,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051807346] [2020-10-14 20:56:11,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:56:11,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:11,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:56:11,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:56:11,931 INFO L87 Difference]: Start difference. First operand 5220 states and 6484 transitions. Second operand 5 states. [2020-10-14 20:56:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:13,467 INFO L93 Difference]: Finished difference Result 8708 states and 10918 transitions. [2020-10-14 20:56:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:13,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-14 20:56:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:13,493 INFO L225 Difference]: With dead ends: 8708 [2020-10-14 20:56:13,494 INFO L226 Difference]: Without dead ends: 5230 [2020-10-14 20:56:13,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2020-10-14 20:56:13,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 5218. [2020-10-14 20:56:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5218 states. [2020-10-14 20:56:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 6463 transitions. [2020-10-14 20:56:13,599 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 6463 transitions. Word has length 256 [2020-10-14 20:56:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:13,600 INFO L479 AbstractCegarLoop]: Abstraction has 5218 states and 6463 transitions. [2020-10-14 20:56:13,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:56:13,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 6463 transitions. [2020-10-14 20:56:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 20:56:13,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:13,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:13,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 20:56:13,607 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:13,607 INFO L82 PathProgramCache]: Analyzing trace with hash -763992209, now seen corresponding path program 1 times [2020-10-14 20:56:13,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:13,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296524414] [2020-10-14 20:56:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 20:56:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:56:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-10-14 20:56:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:15,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:56:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:56:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 20:56:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:15,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:15,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:15,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:15,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:56:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 20:56:15,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:15,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:56:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:15,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:56:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:56:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 20:56:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:15,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:56:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 97 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:56:15,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296524414] [2020-10-14 20:56:15,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:15,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:15,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414628607] [2020-10-14 20:56:15,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:15,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:15,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:15,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:15,959 INFO L87 Difference]: Start difference. First operand 5218 states and 6463 transitions. Second operand 7 states. [2020-10-14 20:56:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:19,444 INFO L93 Difference]: Finished difference Result 11449 states and 14280 transitions. [2020-10-14 20:56:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:19,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-14 20:56:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:19,469 INFO L225 Difference]: With dead ends: 11449 [2020-10-14 20:56:19,469 INFO L226 Difference]: Without dead ends: 6621 [2020-10-14 20:56:19,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2020-10-14 20:56:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 6588. [2020-10-14 20:56:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6588 states. [2020-10-14 20:56:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 8102 transitions. [2020-10-14 20:56:19,602 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 8102 transitions. Word has length 256 [2020-10-14 20:56:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:19,602 INFO L479 AbstractCegarLoop]: Abstraction has 6588 states and 8102 transitions. [2020-10-14 20:56:19,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 8102 transitions. [2020-10-14 20:56:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 20:56:19,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:19,611 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:19,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 20:56:19,611 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash 933674271, now seen corresponding path program 1 times [2020-10-14 20:56:19,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:19,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958129095] [2020-10-14 20:56:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:20,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:20,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 20:56:20,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-14 20:56:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:20,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 20:56:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 20:56:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:21,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:21,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:21,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:21,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:56:21,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 20:56:21,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:21,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 20:56:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:56:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:21,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:21,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:56:21,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 20:56:21,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:21,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:56:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:21,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958129095] [2020-10-14 20:56:21,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:21,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:21,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737727410] [2020-10-14 20:56:21,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:21,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:21,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:21,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:21,597 INFO L87 Difference]: Start difference. First operand 6588 states and 8102 transitions. Second operand 7 states. [2020-10-14 20:56:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:24,298 INFO L93 Difference]: Finished difference Result 11818 states and 14639 transitions. [2020-10-14 20:56:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:56:24,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 20:56:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:24,323 INFO L225 Difference]: With dead ends: 11818 [2020-10-14 20:56:24,323 INFO L226 Difference]: Without dead ends: 7566 [2020-10-14 20:56:24,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7566 states. [2020-10-14 20:56:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7566 to 7534. [2020-10-14 20:56:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7534 states. [2020-10-14 20:56:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7534 states to 7534 states and 9192 transitions. [2020-10-14 20:56:24,563 INFO L78 Accepts]: Start accepts. Automaton has 7534 states and 9192 transitions. Word has length 265 [2020-10-14 20:56:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:24,564 INFO L479 AbstractCegarLoop]: Abstraction has 7534 states and 9192 transitions. [2020-10-14 20:56:24,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 7534 states and 9192 transitions. [2020-10-14 20:56:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 20:56:24,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:24,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:24,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 20:56:24,577 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1634208969, now seen corresponding path program 1 times [2020-10-14 20:56:24,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:24,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805240144] [2020-10-14 20:56:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:25,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:25,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 20:56:25,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-14 20:56:25,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:25,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 20:56:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:25,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:25,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:25,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:25,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:25,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:25,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:25,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:26,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:26,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 20:56:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:26,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 20:56:26,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 20:56:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:26,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805240144] [2020-10-14 20:56:26,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:26,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:26,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515264188] [2020-10-14 20:56:26,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:26,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:26,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:26,403 INFO L87 Difference]: Start difference. First operand 7534 states and 9192 transitions. Second operand 7 states. [2020-10-14 20:56:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:30,034 INFO L93 Difference]: Finished difference Result 14294 states and 17472 transitions. [2020-10-14 20:56:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:56:30,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-14 20:56:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:30,058 INFO L225 Difference]: With dead ends: 14294 [2020-10-14 20:56:30,058 INFO L226 Difference]: Without dead ends: 7152 [2020-10-14 20:56:30,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2020-10-14 20:56:30,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 6736. [2020-10-14 20:56:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6736 states. [2020-10-14 20:56:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 8069 transitions. [2020-10-14 20:56:30,200 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 8069 transitions. Word has length 273 [2020-10-14 20:56:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:30,200 INFO L479 AbstractCegarLoop]: Abstraction has 6736 states and 8069 transitions. [2020-10-14 20:56:30,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 8069 transitions. [2020-10-14 20:56:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 20:56:30,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:30,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:30,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 20:56:30,208 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:30,209 INFO L82 PathProgramCache]: Analyzing trace with hash -185120614, now seen corresponding path program 1 times [2020-10-14 20:56:30,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:30,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682506378] [2020-10-14 20:56:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 20:56:30,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-14 20:56:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-14 20:56:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 20:56:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:30,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:30,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:30,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:30,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:56:30,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:30,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 20:56:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 20:56:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:31,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:31,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-14 20:56:31,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682506378] [2020-10-14 20:56:31,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:31,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:56:31,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076916333] [2020-10-14 20:56:31,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:56:31,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:31,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:56:31,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:31,284 INFO L87 Difference]: Start difference. First operand 6736 states and 8069 transitions. Second operand 6 states. [2020-10-14 20:56:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:34,704 INFO L93 Difference]: Finished difference Result 13311 states and 15979 transitions. [2020-10-14 20:56:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:56:34,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2020-10-14 20:56:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:34,722 INFO L225 Difference]: With dead ends: 13311 [2020-10-14 20:56:34,722 INFO L226 Difference]: Without dead ends: 6769 [2020-10-14 20:56:34,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:56:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2020-10-14 20:56:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6736. [2020-10-14 20:56:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6736 states. [2020-10-14 20:56:34,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 7881 transitions. [2020-10-14 20:56:34,848 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 7881 transitions. Word has length 275 [2020-10-14 20:56:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:34,849 INFO L479 AbstractCegarLoop]: Abstraction has 6736 states and 7881 transitions. [2020-10-14 20:56:34,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:56:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 7881 transitions. [2020-10-14 20:56:34,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 20:56:34,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:34,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:34,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 20:56:34,859 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:34,860 INFO L82 PathProgramCache]: Analyzing trace with hash 709748751, now seen corresponding path program 1 times [2020-10-14 20:56:34,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:34,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279520400] [2020-10-14 20:56:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 20:56:37,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2330 [2020-10-14 20:56:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:37,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:56:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 20:56:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:37,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:56:37,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:37,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:56:37,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 20:56:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:56:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:56:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 20:56:37,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:37,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:56:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:56:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:56:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:37,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:37,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 20:56:37,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 20:56:37,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:37,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:56:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 143 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 20:56:38,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279520400] [2020-10-14 20:56:38,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:38,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:56:38,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103072338] [2020-10-14 20:56:38,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:56:38,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:38,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:56:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:56:38,157 INFO L87 Difference]: Start difference. First operand 6736 states and 7881 transitions. Second operand 10 states. [2020-10-14 20:56:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:43,892 INFO L93 Difference]: Finished difference Result 16709 states and 20320 transitions. [2020-10-14 20:56:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 20:56:43,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 316 [2020-10-14 20:56:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:43,916 INFO L225 Difference]: With dead ends: 16709 [2020-10-14 20:56:43,916 INFO L226 Difference]: Without dead ends: 11913 [2020-10-14 20:56:43,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 20:56:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2020-10-14 20:56:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 10650. [2020-10-14 20:56:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10650 states. [2020-10-14 20:56:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 12441 transitions. [2020-10-14 20:56:44,118 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 12441 transitions. Word has length 316 [2020-10-14 20:56:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:44,119 INFO L479 AbstractCegarLoop]: Abstraction has 10650 states and 12441 transitions. [2020-10-14 20:56:44,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:56:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 12441 transitions. [2020-10-14 20:56:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 20:56:44,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:44,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:44,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 20:56:44,131 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:44,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1510477193, now seen corresponding path program 1 times [2020-10-14 20:56:44,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:44,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037833303] [2020-10-14 20:56:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:45,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 20:56:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:56:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 20:56:45,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:45,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:45,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:45,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:45,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:45,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:45,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:45,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:56:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 20:56:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:45,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:56:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:56:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:45,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 20:56:45,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 174 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:45,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037833303] [2020-10-14 20:56:45,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:45,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:56:45,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443891922] [2020-10-14 20:56:45,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:56:45,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:56:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:56:45,967 INFO L87 Difference]: Start difference. First operand 10650 states and 12441 transitions. Second operand 8 states. [2020-10-14 20:56:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:49,057 INFO L93 Difference]: Finished difference Result 19783 states and 23213 transitions. [2020-10-14 20:56:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:49,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-10-14 20:56:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:49,078 INFO L225 Difference]: With dead ends: 19783 [2020-10-14 20:56:49,078 INFO L226 Difference]: Without dead ends: 11448 [2020-10-14 20:56:49,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11448 states. [2020-10-14 20:56:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11448 to 11416. [2020-10-14 20:56:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11416 states. [2020-10-14 20:56:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11416 states to 11416 states and 13310 transitions. [2020-10-14 20:56:49,285 INFO L78 Accepts]: Start accepts. Automaton has 11416 states and 13310 transitions. Word has length 342 [2020-10-14 20:56:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:49,286 INFO L479 AbstractCegarLoop]: Abstraction has 11416 states and 13310 transitions. [2020-10-14 20:56:49,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:56:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11416 states and 13310 transitions. [2020-10-14 20:56:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-14 20:56:49,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:49,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:49,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 20:56:49,313 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -714407037, now seen corresponding path program 1 times [2020-10-14 20:56:49,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:49,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173854660] [2020-10-14 20:56:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:49,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:49,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:50,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-14 20:56:50,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 20:56:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:50,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:50,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 20:56:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:50,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 20:56:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 20:56:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:51,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 20:56:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 20:56:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 20:56:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-14 20:56:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-14 20:56:51,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173854660] [2020-10-14 20:56:51,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:51,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:56:51,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638834181] [2020-10-14 20:56:51,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:56:51,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:51,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:56:51,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:51,275 INFO L87 Difference]: Start difference. First operand 11416 states and 13310 transitions. Second operand 6 states. [2020-10-14 20:56:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:52,952 INFO L93 Difference]: Finished difference Result 20121 states and 23545 transitions. [2020-10-14 20:56:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:52,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 435 [2020-10-14 20:56:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:52,978 INFO L225 Difference]: With dead ends: 20121 [2020-10-14 20:56:52,978 INFO L226 Difference]: Without dead ends: 11039 [2020-10-14 20:56:52,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2020-10-14 20:56:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 11003. [2020-10-14 20:56:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11003 states. [2020-10-14 20:56:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 12778 transitions. [2020-10-14 20:56:53,165 INFO L78 Accepts]: Start accepts. Automaton has 11003 states and 12778 transitions. Word has length 435 [2020-10-14 20:56:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:53,165 INFO L479 AbstractCegarLoop]: Abstraction has 11003 states and 12778 transitions. [2020-10-14 20:56:53,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:56:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 11003 states and 12778 transitions. [2020-10-14 20:56:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-14 20:56:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:53,184 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:53,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 20:56:53,185 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1337048641, now seen corresponding path program 1 times [2020-10-14 20:56:53,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:53,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254420509] [2020-10-14 20:56:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:53,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 20:56:57,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:56:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4227 [2020-10-14 20:56:57,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:56:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 20:56:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:57,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:57,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:56:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 20:56:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:56:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:56:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 20:56:57,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 20:56:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 20:56:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:58,048 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-10-14 20:56:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-14 20:56:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:56:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 20:56:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:58,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 20:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-14 20:56:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:58,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:58,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 20:56:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 20:56:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:58,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 20:56:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 202 proven. 157 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-14 20:56:58,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254420509] [2020-10-14 20:56:58,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:58,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:58,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341247869] [2020-10-14 20:56:58,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:58,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:58,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:58,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:58,876 INFO L87 Difference]: Start difference. First operand 11003 states and 12778 transitions. Second operand 7 states. [2020-10-14 20:57:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:01,703 INFO L93 Difference]: Finished difference Result 23560 states and 27518 transitions. [2020-10-14 20:57:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:01,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-14 20:57:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:01,729 INFO L225 Difference]: With dead ends: 23560 [2020-10-14 20:57:01,729 INFO L226 Difference]: Without dead ends: 12759 [2020-10-14 20:57:01,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:57:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12759 states. [2020-10-14 20:57:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12759 to 12147. [2020-10-14 20:57:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12147 states. [2020-10-14 20:57:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12147 states to 12147 states and 14042 transitions. [2020-10-14 20:57:01,932 INFO L78 Accepts]: Start accepts. Automaton has 12147 states and 14042 transitions. Word has length 446 [2020-10-14 20:57:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:01,932 INFO L479 AbstractCegarLoop]: Abstraction has 12147 states and 14042 transitions. [2020-10-14 20:57:01,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12147 states and 14042 transitions. [2020-10-14 20:57:01,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-14 20:57:01,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:01,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:01,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 20:57:01,952 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:01,953 INFO L82 PathProgramCache]: Analyzing trace with hash 301951697, now seen corresponding path program 1 times [2020-10-14 20:57:01,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:01,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865740105] [2020-10-14 20:57:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 459 [2020-10-14 20:57:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:07,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:07,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:07,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:07,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:57:07,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:07,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:57:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:57:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 20:57:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:57:07,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 20:57:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 20:57:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:08,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:08,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:57:08,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 20:57:08,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:08,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 20:57:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:57:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 231 proven. 80 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-14 20:57:08,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865740105] [2020-10-14 20:57:08,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:08,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:57:08,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215856969] [2020-10-14 20:57:08,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 20:57:08,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 20:57:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:57:08,583 INFO L87 Difference]: Start difference. First operand 12147 states and 14042 transitions. Second operand 11 states. [2020-10-14 20:57:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:15,157 INFO L93 Difference]: Finished difference Result 25829 states and 30076 transitions. [2020-10-14 20:57:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 20:57:15,158 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 451 [2020-10-14 20:57:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:15,192 INFO L225 Difference]: With dead ends: 25829 [2020-10-14 20:57:15,192 INFO L226 Difference]: Without dead ends: 16206 [2020-10-14 20:57:15,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-10-14 20:57:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16206 states. [2020-10-14 20:57:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16206 to 16090. [2020-10-14 20:57:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16090 states. [2020-10-14 20:57:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 18572 transitions. [2020-10-14 20:57:15,485 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 18572 transitions. Word has length 451 [2020-10-14 20:57:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:15,485 INFO L479 AbstractCegarLoop]: Abstraction has 16090 states and 18572 transitions. [2020-10-14 20:57:15,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 20:57:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 18572 transitions. [2020-10-14 20:57:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-14 20:57:15,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:15,508 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:15,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 20:57:15,509 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1278568807, now seen corresponding path program 1 times [2020-10-14 20:57:15,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:15,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043554400] [2020-10-14 20:57:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 20:57:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 20:57:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:17,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:17,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:17,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:17,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:17,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:57:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 20:57:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 20:57:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:18,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:18,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 20:57:18,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-14 20:57:18,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:18,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 20:57:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 20:57:18,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043554400] [2020-10-14 20:57:18,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:18,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:18,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73883268] [2020-10-14 20:57:18,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:18,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:18,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:18,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:18,270 INFO L87 Difference]: Start difference. First operand 16090 states and 18572 transitions. Second operand 7 states. [2020-10-14 20:57:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:21,626 INFO L93 Difference]: Finished difference Result 32388 states and 37685 transitions. [2020-10-14 20:57:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:57:21,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-14 20:57:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:21,658 INFO L225 Difference]: With dead ends: 32388 [2020-10-14 20:57:21,658 INFO L226 Difference]: Without dead ends: 18636 [2020-10-14 20:57:21,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18636 states. [2020-10-14 20:57:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18636 to 18190. [2020-10-14 20:57:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18190 states. [2020-10-14 20:57:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18190 states to 18190 states and 20769 transitions. [2020-10-14 20:57:21,982 INFO L78 Accepts]: Start accepts. Automaton has 18190 states and 20769 transitions. Word has length 455 [2020-10-14 20:57:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:21,983 INFO L479 AbstractCegarLoop]: Abstraction has 18190 states and 20769 transitions. [2020-10-14 20:57:21,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 18190 states and 20769 transitions. [2020-10-14 20:57:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-14 20:57:22,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:22,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:57:22,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 20:57:22,005 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:22,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1999826250, now seen corresponding path program 1 times [2020-10-14 20:57:22,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:22,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280442691] [2020-10-14 20:57:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-14 20:57:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:57:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 20:57:27,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:57:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:57:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 20:57:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:27,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:57:27,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:57:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:27,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:27,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 20:57:27,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 20:57:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 20:57:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 20:57:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 20:57:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:57:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 20:57:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:28,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:28,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 20:57:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 71 proven. 369 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 20:57:28,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280442691] [2020-10-14 20:57:28,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:28,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:57:28,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656334266] [2020-10-14 20:57:28,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:57:28,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:28,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:57:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:57:28,434 INFO L87 Difference]: Start difference. First operand 18190 states and 20769 transitions. Second operand 8 states. [2020-10-14 20:57:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:31,620 INFO L93 Difference]: Finished difference Result 32356 states and 37044 transitions. [2020-10-14 20:57:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 20:57:31,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 475 [2020-10-14 20:57:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:31,653 INFO L225 Difference]: With dead ends: 32356 [2020-10-14 20:57:31,653 INFO L226 Difference]: Without dead ends: 17864 [2020-10-14 20:57:31,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 20:57:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17864 states. [2020-10-14 20:57:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17864 to 17798. [2020-10-14 20:57:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17798 states. [2020-10-14 20:57:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17798 states to 17798 states and 20333 transitions. [2020-10-14 20:57:31,922 INFO L78 Accepts]: Start accepts. Automaton has 17798 states and 20333 transitions. Word has length 475 [2020-10-14 20:57:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:31,922 INFO L479 AbstractCegarLoop]: Abstraction has 17798 states and 20333 transitions. [2020-10-14 20:57:31,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:57:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17798 states and 20333 transitions. [2020-10-14 20:57:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 20:57:31,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:31,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:31,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 20:57:31,944 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:31,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2065714531, now seen corresponding path program 1 times [2020-10-14 20:57:31,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:31,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949891337] [2020-10-14 20:57:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-14 20:57:36,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:57:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4285 [2020-10-14 20:57:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 20:57:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-14 20:57:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 20:57:36,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:57:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:57:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 20:57:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 20:57:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 20:57:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 20:57:36,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 20:57:36,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 20:57:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-14 20:57:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:37,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:57:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 20:57:37,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 382 proven. 18 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 20:57:37,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949891337] [2020-10-14 20:57:37,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:37,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:57:37,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014409075] [2020-10-14 20:57:37,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:57:37,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:57:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:57:37,647 INFO L87 Difference]: Start difference. First operand 17798 states and 20333 transitions. Second operand 8 states. [2020-10-14 20:57:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:40,897 INFO L93 Difference]: Finished difference Result 31979 states and 36603 transitions. [2020-10-14 20:57:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:57:40,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 504 [2020-10-14 20:57:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:40,938 INFO L225 Difference]: With dead ends: 31979 [2020-10-14 20:57:40,939 INFO L226 Difference]: Without dead ends: 17858 [2020-10-14 20:57:40,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17858 states. [2020-10-14 20:57:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17858 to 17604. [2020-10-14 20:57:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17604 states. [2020-10-14 20:57:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17604 states to 17604 states and 20086 transitions. [2020-10-14 20:57:41,197 INFO L78 Accepts]: Start accepts. Automaton has 17604 states and 20086 transitions. Word has length 504 [2020-10-14 20:57:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:41,198 INFO L479 AbstractCegarLoop]: Abstraction has 17604 states and 20086 transitions. [2020-10-14 20:57:41,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:57:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 17604 states and 20086 transitions. [2020-10-14 20:57:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-14 20:57:41,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:41,214 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:57:41,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 20:57:41,214 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:41,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1975507042, now seen corresponding path program 1 times [2020-10-14 20:57:41,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:41,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703129298] [2020-10-14 20:57:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:43,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-14 20:57:43,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2000 [2020-10-14 20:57:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:43,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 20:57:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 20:57:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:43,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:43,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:43,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:43,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 20:57:43,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 20:57:43,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:43,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 20:57:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 20:57:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 20:57:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:43,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-14 20:57:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 20:57:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 20:57:43,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:43,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 20:57:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 309 proven. 103 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-14 20:57:43,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703129298] [2020-10-14 20:57:43,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:43,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:43,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457748659] [2020-10-14 20:57:43,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:43,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:43,927 INFO L87 Difference]: Start difference. First operand 17604 states and 20086 transitions. Second operand 7 states. [2020-10-14 20:57:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:47,333 INFO L93 Difference]: Finished difference Result 35687 states and 40984 transitions. [2020-10-14 20:57:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:47,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 509 [2020-10-14 20:57:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:47,370 INFO L225 Difference]: With dead ends: 35687 [2020-10-14 20:57:47,370 INFO L226 Difference]: Without dead ends: 18467 [2020-10-14 20:57:47,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:57:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18467 states. [2020-10-14 20:57:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18467 to 18382. [2020-10-14 20:57:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18382 states. [2020-10-14 20:57:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18382 states to 18382 states and 20932 transitions. [2020-10-14 20:57:47,736 INFO L78 Accepts]: Start accepts. Automaton has 18382 states and 20932 transitions. Word has length 509 [2020-10-14 20:57:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:47,736 INFO L479 AbstractCegarLoop]: Abstraction has 18382 states and 20932 transitions. [2020-10-14 20:57:47,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 18382 states and 20932 transitions. [2020-10-14 20:57:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-14 20:57:47,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:47,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:57:47,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 20:57:47,756 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:47,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:47,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1411102440, now seen corresponding path program 1 times [2020-10-14 20:57:47,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:47,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974536339] [2020-10-14 20:57:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 20:57:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 20:57:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-14 20:57:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:50,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:50,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:50,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:50,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:50,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:50,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:57:50,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:50,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:57:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 20:57:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 20:57:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:57:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 20:57:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-14 20:57:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:50,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:57:50,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 20:57:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:50,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 20:57:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 554 proven. 115 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 20:57:51,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974536339] [2020-10-14 20:57:51,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:51,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:57:51,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472362076] [2020-10-14 20:57:51,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:57:51,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:57:51,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:57:51,020 INFO L87 Difference]: Start difference. First operand 18382 states and 20932 transitions. Second operand 10 states. [2020-10-14 20:57:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:58,910 INFO L93 Difference]: Finished difference Result 43584 states and 51002 transitions. [2020-10-14 20:57:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 20:57:58,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 511 [2020-10-14 20:57:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:58,966 INFO L225 Difference]: With dead ends: 43584 [2020-10-14 20:57:58,966 INFO L226 Difference]: Without dead ends: 25586 [2020-10-14 20:57:58,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-14 20:57:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25586 states. [2020-10-14 20:57:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25586 to 24292. [2020-10-14 20:57:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24292 states. [2020-10-14 20:57:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24292 states to 24292 states and 27846 transitions. [2020-10-14 20:57:59,368 INFO L78 Accepts]: Start accepts. Automaton has 24292 states and 27846 transitions. Word has length 511 [2020-10-14 20:57:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:59,368 INFO L479 AbstractCegarLoop]: Abstraction has 24292 states and 27846 transitions. [2020-10-14 20:57:59,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:57:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 24292 states and 27846 transitions. [2020-10-14 20:57:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-14 20:57:59,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:59,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:57:59,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 20:57:59,387 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:59,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:59,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1982371070, now seen corresponding path program 1 times [2020-10-14 20:57:59,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:59,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319916381] [2020-10-14 20:57:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:04,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 20:58:04,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:58:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4889 [2020-10-14 20:58:04,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:04,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 20:58:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-14 20:58:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 20:58:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:04,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:04,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:04,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:58:04,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:04,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:04,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:04,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 20:58:04,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:04,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:04,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 20:58:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:04,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:58:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:04,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:58:04,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:04,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 20:58:04,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:04,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:04,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:58:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:04,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 20:58:04,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 20:58:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:04,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:58:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-14 20:58:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:58:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 132 proven. 11 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2020-10-14 20:58:05,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319916381] [2020-10-14 20:58:05,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:05,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:05,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552330197] [2020-10-14 20:58:05,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:05,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:05,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:05,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:05,197 INFO L87 Difference]: Start difference. First operand 24292 states and 27846 transitions. Second operand 7 states. [2020-10-14 20:58:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:11,871 INFO L93 Difference]: Finished difference Result 50275 states and 57771 transitions. [2020-10-14 20:58:11,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 20:58:11,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 543 [2020-10-14 20:58:11,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:11,927 INFO L225 Difference]: With dead ends: 50275 [2020-10-14 20:58:11,927 INFO L226 Difference]: Without dead ends: 29275 [2020-10-14 20:58:11,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 20:58:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29275 states. [2020-10-14 20:58:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29275 to 25412. [2020-10-14 20:58:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25412 states. [2020-10-14 20:58:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25412 states to 25412 states and 28717 transitions. [2020-10-14 20:58:12,367 INFO L78 Accepts]: Start accepts. Automaton has 25412 states and 28717 transitions. Word has length 543 [2020-10-14 20:58:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:12,368 INFO L479 AbstractCegarLoop]: Abstraction has 25412 states and 28717 transitions. [2020-10-14 20:58:12,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25412 states and 28717 transitions. [2020-10-14 20:58:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-14 20:58:12,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:12,408 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:12,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 20:58:12,408 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:12,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:12,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1000633882, now seen corresponding path program 1 times [2020-10-14 20:58:12,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:12,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640558122] [2020-10-14 20:58:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 748 [2020-10-14 20:58:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 20:58:17,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:17,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-14 20:58:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 20:58:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:17,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:17,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:17,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:18,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 20:58:18,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:58:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:58:18,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:58:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 20:58:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 20:58:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-14 20:58:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 20:58:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 20:58:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 20:58:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-14 20:58:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 20:58:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 20:58:18,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 20:58:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1630 backedges. 591 proven. 103 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2020-10-14 20:58:18,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640558122] [2020-10-14 20:58:18,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:18,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:18,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457377211] [2020-10-14 20:58:18,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:18,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:18,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:18,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:18,845 INFO L87 Difference]: Start difference. First operand 25412 states and 28717 transitions. Second operand 7 states. [2020-10-14 20:58:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:22,819 INFO L93 Difference]: Finished difference Result 51434 states and 58112 transitions. [2020-10-14 20:58:22,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:58:22,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-14 20:58:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:22,869 INFO L225 Difference]: With dead ends: 51434 [2020-10-14 20:58:22,869 INFO L226 Difference]: Without dead ends: 26414 [2020-10-14 20:58:22,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26414 states. [2020-10-14 20:58:23,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26414 to 25566. [2020-10-14 20:58:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25566 states. [2020-10-14 20:58:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25566 states to 25566 states and 28594 transitions. [2020-10-14 20:58:23,209 INFO L78 Accepts]: Start accepts. Automaton has 25566 states and 28594 transitions. Word has length 728 [2020-10-14 20:58:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:23,210 INFO L479 AbstractCegarLoop]: Abstraction has 25566 states and 28594 transitions. [2020-10-14 20:58:23,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 25566 states and 28594 transitions. [2020-10-14 20:58:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2020-10-14 20:58:23,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:23,240 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:23,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 20:58:23,240 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:23,241 INFO L82 PathProgramCache]: Analyzing trace with hash 273082013, now seen corresponding path program 1 times [2020-10-14 20:58:23,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:23,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271747364] [2020-10-14 20:58:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 789 [2020-10-14 20:58:28,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:58:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:58:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 20:58:28,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:58:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:58:28,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 20:58:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:58:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-14 20:58:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:28,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:28,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:58:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:28,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 20:58:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:29,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:29,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 20:58:29,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 20:58:29,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:29,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 20:58:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2020-10-14 20:58:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:29,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:29,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 20:58:29,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 20:58:29,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:29,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 20:58:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 457 proven. 251 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2020-10-14 20:58:29,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271747364] [2020-10-14 20:58:29,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:29,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:58:29,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940517867] [2020-10-14 20:58:29,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:58:29,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:58:29,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:58:29,485 INFO L87 Difference]: Start difference. First operand 25566 states and 28594 transitions. Second operand 8 states. [2020-10-14 20:58:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:35,611 INFO L93 Difference]: Finished difference Result 53072 states and 59527 transitions. [2020-10-14 20:58:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 20:58:35,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 767 [2020-10-14 20:58:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:35,658 INFO L225 Difference]: With dead ends: 53072 [2020-10-14 20:58:35,658 INFO L226 Difference]: Without dead ends: 27512 [2020-10-14 20:58:35,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-14 20:58:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27512 states. [2020-10-14 20:58:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27512 to 26649. [2020-10-14 20:58:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26649 states. [2020-10-14 20:58:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26649 states to 26649 states and 29320 transitions. [2020-10-14 20:58:35,988 INFO L78 Accepts]: Start accepts. Automaton has 26649 states and 29320 transitions. Word has length 767 [2020-10-14 20:58:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:35,989 INFO L479 AbstractCegarLoop]: Abstraction has 26649 states and 29320 transitions. [2020-10-14 20:58:35,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:58:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26649 states and 29320 transitions. [2020-10-14 20:58:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 20:58:36,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:36,020 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:36,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 20:58:36,021 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -516404717, now seen corresponding path program 1 times [2020-10-14 20:58:36,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:36,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443639002] [2020-10-14 20:58:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:41,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-14 20:58:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:58:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-14 20:58:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:41,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 20:58:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 425 [2020-10-14 20:58:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 330 [2020-10-14 20:58:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:58:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 20:58:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:41,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 20:58:41,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:41,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 20:58:41,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:41,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 20:58:41,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-14 20:58:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:41,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:41,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:41,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 20:58:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:41,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:58:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-14 20:58:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:42,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 20:58:42,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2020-10-14 20:58:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 20:58:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-10-14 20:58:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 20:58:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 851 [2020-10-14 20:58:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 20:58:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 20:58:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 20:58:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3069 backedges. 1247 proven. 646 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2020-10-14 20:58:43,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443639002] [2020-10-14 20:58:43,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:43,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:58:43,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441772775] [2020-10-14 20:58:43,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:58:43,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:43,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:58:43,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:58:43,190 INFO L87 Difference]: Start difference. First operand 26649 states and 29320 transitions. Second operand 10 states. [2020-10-14 20:58:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:47,953 INFO L93 Difference]: Finished difference Result 41826 states and 46084 transitions. [2020-10-14 20:58:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 20:58:47,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 976 [2020-10-14 20:58:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:47,955 INFO L225 Difference]: With dead ends: 41826 [2020-10-14 20:58:47,955 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 20:58:47,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-14 20:58:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 20:58:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 20:58:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 20:58:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 20:58:47,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 976 [2020-10-14 20:58:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:47,992 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 20:58:47,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:58:47,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 20:58:47,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 20:58:47,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 20:58:47,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 20:58:51,638 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 662 DAG size of output: 553 [2020-10-14 20:58:52,551 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 662 DAG size of output: 553 [2020-10-14 20:58:52,787 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33