/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=NARROWEST --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/Problem18_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:50:06,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:50:06,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:50:06,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:50:06,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:50:06,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:50:06,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:50:06,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:50:06,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:50:06,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:50:06,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:50:06,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:50:06,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:50:06,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:50:06,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:50:06,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:50:06,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:50:06,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:50:06,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:50:06,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:50:06,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:50:06,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:50:06,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:50:06,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:50:06,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:50:06,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:50:06,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:50:06,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:50:06,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:50:06,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:50:06,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:50:06,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:50:06,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:50:06,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:50:06,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:50:06,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:50:06,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:50:06,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:50:06,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:50:06,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:50:06,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:50:06,961 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 [2020-10-13 09:50:06,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:50:06,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:50:06,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:50:06,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:50:06,985 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:50:06,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:50:06,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:50:06,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:50:06,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:50:06,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:50:06,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:50:06,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:50:06,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:50:06,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:50:06,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:50:06,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:50:06,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:50:06,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:50:06,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:50:06,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:50:06,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:50:06,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:50:06,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:50:06,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:50:06,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:50:06,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:50:06,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:50:06,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:50:06,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:50:06,989 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:50:07,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:50:07,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:50:07,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:50:07,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:50:07,347 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:50:07,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label32.c [2020-10-13 09:50:07,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2311099ad/fa5f28a9828e44cf857697a4c344c089/FLAGda876674f [2020-10-13 09:50:08,075 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:50:08,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label32.c [2020-10-13 09:50:08,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2311099ad/fa5f28a9828e44cf857697a4c344c089/FLAGda876674f [2020-10-13 09:50:08,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2311099ad/fa5f28a9828e44cf857697a4c344c089 [2020-10-13 09:50:08,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:50:08,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:50:08,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:50:08,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:50:08,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:50:08,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:50:08" (1/1) ... [2020-10-13 09:50:08,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634162df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:08, skipping insertion in model container [2020-10-13 09:50:08,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:50:08" (1/1) ... [2020-10-13 09:50:08,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:50:08,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:50:09,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:50:09,575 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:50:10,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:50:10,290 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:50:10,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10 WrapperNode [2020-10-13 09:50:10,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:50:10,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:50:10,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:50:10,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:50:10,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (1/1) ... [2020-10-13 09:50:10,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:50:10,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:50:10,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:50:10,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:50:10,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (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 [2020-10-13 09:50:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:50:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:50:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:50:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:50:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:50:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:50:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:50:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:50:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:50:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:50:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:50:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:50:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:50:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:50:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:50:17,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:50:17,190 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:50:17,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:50:17 BoogieIcfgContainer [2020-10-13 09:50:17,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:50:17,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:50:17,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:50:17,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:50:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:50:08" (1/3) ... [2020-10-13 09:50:17,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3003530a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:50:17, skipping insertion in model container [2020-10-13 09:50:17,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:10" (2/3) ... [2020-10-13 09:50:17,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3003530a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:50:17, skipping insertion in model container [2020-10-13 09:50:17,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:50:17" (3/3) ... [2020-10-13 09:50:17,212 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label32.c [2020-10-13 09:50:17,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:50:17,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:50:17,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:50:17,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:50:17,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:50:17,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:50:17,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:50:17,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:50:17,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:50:17,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:50:17,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:50:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:50:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 09:50:17,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:17,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:17,336 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash 255374729, now seen corresponding path program 1 times [2020-10-13 09:50:17,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:17,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576660478] [2020-10-13 09:50:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:17,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:17,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 09:50:17,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-13 09:50:17,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:50:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:50:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 09:50:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:50:18,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:18,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:18,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:50:18,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:50:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:18,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576660478] [2020-10-13 09:50:18,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:50:18,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:50:18,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017885845] [2020-10-13 09:50:18,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:50:18,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:50:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:50:18,061 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:50:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:26,237 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:50:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:26,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 09:50:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:26,270 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:50:26,270 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:50:26,283 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 [2020-10-13 09:50:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:50:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:50:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:50:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:50:26,436 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 34 [2020-10-13 09:50:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:26,437 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:50:26,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:50:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:50:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 09:50:26,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:26,446 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, 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] [2020-10-13 09:50:26,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:50:26,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1818000124, now seen corresponding path program 1 times [2020-10-13 09:50:26,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:26,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138075519] [2020-10-13 09:50:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:27,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:27,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:50:27,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-13 09:50:27,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:50:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:50:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:50:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:27,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:27,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:27,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:27,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:27,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:50:27,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:50:27,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:50:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 09:50:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:27,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138075519] [2020-10-13 09:50:27,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:27,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:27,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425383679] [2020-10-13 09:50:27,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:27,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:27,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:27,851 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-13 09:50:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:37,090 INFO L93 Difference]: Finished difference Result 3561 states and 5819 transitions. [2020-10-13 09:50:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:37,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 09:50:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:37,109 INFO L225 Difference]: With dead ends: 3561 [2020-10-13 09:50:37,109 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:50:37,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:50:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2020-10-13 09:50:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2020-10-13 09:50:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3083 transitions. [2020-10-13 09:50:37,189 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3083 transitions. Word has length 104 [2020-10-13 09:50:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:37,192 INFO L479 AbstractCegarLoop]: Abstraction has 2138 states and 3083 transitions. [2020-10-13 09:50:37,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3083 transitions. [2020-10-13 09:50:37,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 09:50:37,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:37,205 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, 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] [2020-10-13 09:50:37,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:50:37,208 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:37,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1231127808, now seen corresponding path program 1 times [2020-10-13 09:50:37,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:37,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270532493] [2020-10-13 09:50:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:50:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1312 [2020-10-13 09:50:38,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:50:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:50:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:38,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:38,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:38,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:38,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:38,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:38,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:38,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:38,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:50:38,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:50:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:50:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:38,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270532493] [2020-10-13 09:50:38,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:38,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:38,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902600871] [2020-10-13 09:50:38,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:38,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:38,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:38,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:38,982 INFO L87 Difference]: Start difference. First operand 2138 states and 3083 transitions. Second operand 5 states. [2020-10-13 09:50:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:45,228 INFO L93 Difference]: Finished difference Result 4292 states and 6194 transitions. [2020-10-13 09:50:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:45,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 09:50:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:45,240 INFO L225 Difference]: With dead ends: 4292 [2020-10-13 09:50:45,240 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:50:45,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:50:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2020-10-13 09:50:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2020-10-13 09:50:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3081 transitions. [2020-10-13 09:50:45,297 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3081 transitions. Word has length 122 [2020-10-13 09:50:45,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:45,298 INFO L479 AbstractCegarLoop]: Abstraction has 2138 states and 3081 transitions. [2020-10-13 09:50:45,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:45,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3081 transitions. [2020-10-13 09:50:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 09:50:45,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:45,301 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, 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] [2020-10-13 09:50:45,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:50:45,301 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:45,302 INFO L82 PathProgramCache]: Analyzing trace with hash -25299940, now seen corresponding path program 1 times [2020-10-13 09:50:45,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:45,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314100687] [2020-10-13 09:50:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:45,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:45,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:45,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 09:50:45,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-13 09:50:45,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:50:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:50:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:45,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:45,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:45,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:50:45,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:46,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:46,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:50:46,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:50:46,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:50:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:46,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314100687] [2020-10-13 09:50:46,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:46,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:46,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519534616] [2020-10-13 09:50:46,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:46,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:46,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:46,136 INFO L87 Difference]: Start difference. First operand 2138 states and 3081 transitions. Second operand 5 states. [2020-10-13 09:50:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:56,037 INFO L93 Difference]: Finished difference Result 6408 states and 9330 transitions. [2020-10-13 09:50:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:56,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 09:50:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:56,065 INFO L225 Difference]: With dead ends: 6408 [2020-10-13 09:50:56,066 INFO L226 Difference]: Without dead ends: 4276 [2020-10-13 09:50:56,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2020-10-13 09:50:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4268. [2020-10-13 09:50:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4268 states. [2020-10-13 09:50:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 5663 transitions. [2020-10-13 09:50:56,197 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 5663 transitions. Word has length 124 [2020-10-13 09:50:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:56,199 INFO L479 AbstractCegarLoop]: Abstraction has 4268 states and 5663 transitions. [2020-10-13 09:50:56,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 5663 transitions. [2020-10-13 09:50:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 09:50:56,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:56,202 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, 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] [2020-10-13 09:50:56,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:50:56,203 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash 669916529, now seen corresponding path program 1 times [2020-10-13 09:50:56,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:56,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241890549] [2020-10-13 09:50:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:50:57,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-13 09:50:57,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:50:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:50:57,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:57,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:57,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:50:57,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:50:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:57,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241890549] [2020-10-13 09:50:57,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:57,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:57,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134698178] [2020-10-13 09:50:57,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:57,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:57,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:57,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:57,826 INFO L87 Difference]: Start difference. First operand 4268 states and 5663 transitions. Second operand 5 states. [2020-10-13 09:51:07,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:07,415 INFO L93 Difference]: Finished difference Result 9958 states and 13744 transitions. [2020-10-13 09:51:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:07,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 09:51:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:07,444 INFO L225 Difference]: With dead ends: 9958 [2020-10-13 09:51:07,445 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:51:07,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:51:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5688. [2020-10-13 09:51:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5688 states. [2020-10-13 09:51:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 7313 transitions. [2020-10-13 09:51:07,619 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 7313 transitions. Word has length 145 [2020-10-13 09:51:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:07,619 INFO L479 AbstractCegarLoop]: Abstraction has 5688 states and 7313 transitions. [2020-10-13 09:51:07,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 7313 transitions. [2020-10-13 09:51:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 09:51:07,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:07,623 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, 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] [2020-10-13 09:51:07,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:51:07,624 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:07,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1743112552, now seen corresponding path program 1 times [2020-10-13 09:51:07,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:07,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220742858] [2020-10-13 09:51:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:08,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:08,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:51:08,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-13 09:51:08,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:51:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:51:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:08,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:08,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:08,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:08,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:08,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:51:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:51:08,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:51:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:08,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220742858] [2020-10-13 09:51:08,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:08,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:08,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772133970] [2020-10-13 09:51:08,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:08,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:08,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:08,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:08,786 INFO L87 Difference]: Start difference. First operand 5688 states and 7313 transitions. Second operand 5 states. [2020-10-13 09:51:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:19,717 INFO L93 Difference]: Finished difference Result 15635 states and 20551 transitions. [2020-10-13 09:51:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:19,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 09:51:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:19,767 INFO L225 Difference]: With dead ends: 15635 [2020-10-13 09:51:19,767 INFO L226 Difference]: Without dead ends: 9953 [2020-10-13 09:51:19,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2020-10-13 09:51:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 9945. [2020-10-13 09:51:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9945 states. [2020-10-13 09:51:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9945 states to 9945 states and 12252 transitions. [2020-10-13 09:51:20,017 INFO L78 Accepts]: Start accepts. Automaton has 9945 states and 12252 transitions. Word has length 166 [2020-10-13 09:51:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:20,018 INFO L479 AbstractCegarLoop]: Abstraction has 9945 states and 12252 transitions. [2020-10-13 09:51:20,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9945 states and 12252 transitions. [2020-10-13 09:51:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 09:51:20,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:20,023 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:20,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:51:20,023 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:20,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1883195470, now seen corresponding path program 1 times [2020-10-13 09:51:20,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:20,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511805338] [2020-10-13 09:51:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 09:51:20,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-13 09:51:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:51:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:51:20,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:21,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:21,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:21,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:21,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:21,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:21,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:21,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:51:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:51:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:51:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:51:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:21,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:21,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:21,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:51:21,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:51:21,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:51:21,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511805338] [2020-10-13 09:51:21,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:21,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:21,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104305861] [2020-10-13 09:51:21,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:21,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:21,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:21,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:21,217 INFO L87 Difference]: Start difference. First operand 9945 states and 12252 transitions. Second operand 5 states. [2020-10-13 09:51:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:32,790 INFO L93 Difference]: Finished difference Result 25566 states and 32136 transitions. [2020-10-13 09:51:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:32,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-13 09:51:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:32,843 INFO L225 Difference]: With dead ends: 25566 [2020-10-13 09:51:32,843 INFO L226 Difference]: Without dead ends: 15627 [2020-10-13 09:51:32,863 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 [2020-10-13 09:51:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15627 states. [2020-10-13 09:51:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15627 to 14215. [2020-10-13 09:51:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14215 states. [2020-10-13 09:51:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14215 states to 14215 states and 17801 transitions. [2020-10-13 09:51:33,196 INFO L78 Accepts]: Start accepts. Automaton has 14215 states and 17801 transitions. Word has length 195 [2020-10-13 09:51:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:33,197 INFO L479 AbstractCegarLoop]: Abstraction has 14215 states and 17801 transitions. [2020-10-13 09:51:33,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14215 states and 17801 transitions. [2020-10-13 09:51:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 09:51:33,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:33,209 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:33,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:51:33,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash 987065583, now seen corresponding path program 1 times [2020-10-13 09:51:33,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:33,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731061092] [2020-10-13 09:51:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:33,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:37,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 09:51:37,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:51:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3919 [2020-10-13 09:51:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:51:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:51:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:37,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:37,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:37,465 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-13 09:51:37,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:37,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:51:37,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:51:37,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:51:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 09:51:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:37,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:51:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 09:51:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:51:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:38,184 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-13 09:51:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:51:38,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731061092] [2020-10-13 09:51:38,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:38,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:38,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632092481] [2020-10-13 09:51:38,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:38,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:38,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:38,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:38,857 INFO L87 Difference]: Start difference. First operand 14215 states and 17801 transitions. Second operand 7 states. [2020-10-13 09:51:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:47,981 INFO L93 Difference]: Finished difference Result 28608 states and 36201 transitions. [2020-10-13 09:51:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:51:47,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-13 09:51:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:48,031 INFO L225 Difference]: With dead ends: 28608 [2020-10-13 09:51:48,031 INFO L226 Difference]: Without dead ends: 14377 [2020-10-13 09:51:48,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:51:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2020-10-13 09:51:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 14280. [2020-10-13 09:51:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14280 states. [2020-10-13 09:51:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 17904 transitions. [2020-10-13 09:51:48,399 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 17904 transitions. Word has length 278 [2020-10-13 09:51:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:48,400 INFO L479 AbstractCegarLoop]: Abstraction has 14280 states and 17904 transitions. [2020-10-13 09:51:48,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:51:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 17904 transitions. [2020-10-13 09:51:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 09:51:48,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:48,409 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:48,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:51:48,409 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2099234599, now seen corresponding path program 1 times [2020-10-13 09:51:48,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:48,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626628220] [2020-10-13 09:51:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 09:51:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:51:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:51:53,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-13 09:51:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:51:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:51:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:51:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:51:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:51:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:51:53,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626628220] [2020-10-13 09:51:53,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:53,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:53,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928304743] [2020-10-13 09:51:53,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:53,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:53,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:53,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:53,917 INFO L87 Difference]: Start difference. First operand 14280 states and 17904 transitions. Second operand 5 states. [2020-10-13 09:52:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:01,399 INFO L93 Difference]: Finished difference Result 28579 states and 35900 transitions. [2020-10-13 09:52:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:01,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-13 09:52:01,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:01,438 INFO L225 Difference]: With dead ends: 28579 [2020-10-13 09:52:01,438 INFO L226 Difference]: Without dead ends: 14290 [2020-10-13 09:52:01,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14290 states. [2020-10-13 09:52:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14290 to 14280. [2020-10-13 09:52:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14280 states. [2020-10-13 09:52:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 17900 transitions. [2020-10-13 09:52:01,720 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 17900 transitions. Word has length 280 [2020-10-13 09:52:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:01,721 INFO L479 AbstractCegarLoop]: Abstraction has 14280 states and 17900 transitions. [2020-10-13 09:52:01,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 17900 transitions. [2020-10-13 09:52:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 09:52:01,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:01,734 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, 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, 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] [2020-10-13 09:52:01,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:52:01,735 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:01,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:01,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1955655257, now seen corresponding path program 1 times [2020-10-13 09:52:01,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:01,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020623840] [2020-10-13 09:52:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 09:52:05,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3333 [2020-10-13 09:52:05,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-10-13 09:52:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:52:05,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:05,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:52:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:05,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:52:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:52:05,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:52:05,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:52:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:52:05,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:52:05,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:52:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-13 09:52:05,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020623840] [2020-10-13 09:52:05,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:05,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:05,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481033058] [2020-10-13 09:52:05,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:05,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:05,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:05,454 INFO L87 Difference]: Start difference. First operand 14280 states and 17900 transitions. Second operand 5 states. [2020-10-13 09:52:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:15,875 INFO L93 Difference]: Finished difference Result 41330 states and 52604 transitions. [2020-10-13 09:52:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:15,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-13 09:52:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:15,955 INFO L225 Difference]: With dead ends: 41330 [2020-10-13 09:52:15,955 INFO L226 Difference]: Without dead ends: 27056 [2020-10-13 09:52:15,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27056 states. [2020-10-13 09:52:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27056 to 27052. [2020-10-13 09:52:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27052 states. [2020-10-13 09:52:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27052 states to 27052 states and 33247 transitions. [2020-10-13 09:52:17,459 INFO L78 Accepts]: Start accepts. Automaton has 27052 states and 33247 transitions. Word has length 289 [2020-10-13 09:52:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:17,460 INFO L479 AbstractCegarLoop]: Abstraction has 27052 states and 33247 transitions. [2020-10-13 09:52:17,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 27052 states and 33247 transitions. [2020-10-13 09:52:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-13 09:52:17,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:17,492 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:17,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:52:17,492 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1119694593, now seen corresponding path program 1 times [2020-10-13 09:52:17,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:17,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85182568] [2020-10-13 09:52:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:20,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:20,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-13 09:52:20,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3281 [2020-10-13 09:52:20,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:20,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:20,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-13 09:52:20,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:52:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:20,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:52:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:21,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:52:21,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 09:52:21,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-13 09:52:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:52:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:21,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:21,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:52:21,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:52:21,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:52:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:22,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85182568] [2020-10-13 09:52:22,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:22,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:22,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003797929] [2020-10-13 09:52:22,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:22,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:22,009 INFO L87 Difference]: Start difference. First operand 27052 states and 33247 transitions. Second operand 5 states. [2020-10-13 09:52:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:32,792 INFO L93 Difference]: Finished difference Result 54134 states and 66622 transitions. [2020-10-13 09:52:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:32,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-10-13 09:52:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:32,864 INFO L225 Difference]: With dead ends: 54134 [2020-10-13 09:52:32,865 INFO L226 Difference]: Without dead ends: 27056 [2020-10-13 09:52:32,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27056 states. [2020-10-13 09:52:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27056 to 27052. [2020-10-13 09:52:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27052 states. [2020-10-13 09:52:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27052 states to 27052 states and 33235 transitions. [2020-10-13 09:52:33,295 INFO L78 Accepts]: Start accepts. Automaton has 27052 states and 33235 transitions. Word has length 425 [2020-10-13 09:52:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:33,296 INFO L479 AbstractCegarLoop]: Abstraction has 27052 states and 33235 transitions. [2020-10-13 09:52:33,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 27052 states and 33235 transitions. [2020-10-13 09:52:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-13 09:52:33,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:33,320 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:52:33,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:52:33,320 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:33,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:33,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1384888967, now seen corresponding path program 1 times [2020-10-13 09:52:33,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:33,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798178398] [2020-10-13 09:52:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:38,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:38,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-13 09:52:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:52:38,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:52:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-13 09:52:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:52:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:38,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:38,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:38,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:38,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:38,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:38,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:52:38,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:52:38,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 09:52:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:38,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:52:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:52:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:52:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:38,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:38,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:52:38,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:38,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:52:38,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:52:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 09:52:38,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798178398] [2020-10-13 09:52:38,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:38,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:38,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750016822] [2020-10-13 09:52:38,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:38,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:38,862 INFO L87 Difference]: Start difference. First operand 27052 states and 33235 transitions. Second operand 5 states. [2020-10-13 09:52:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:46,374 INFO L93 Difference]: Finished difference Result 54111 states and 66555 transitions. [2020-10-13 09:52:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:46,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 441 [2020-10-13 09:52:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:46,448 INFO L225 Difference]: With dead ends: 54111 [2020-10-13 09:52:46,448 INFO L226 Difference]: Without dead ends: 27056 [2020-10-13 09:52:46,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27056 states. [2020-10-13 09:52:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27056 to 27052. [2020-10-13 09:52:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27052 states. [2020-10-13 09:52:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27052 states to 27052 states and 33231 transitions. [2020-10-13 09:52:46,871 INFO L78 Accepts]: Start accepts. Automaton has 27052 states and 33231 transitions. Word has length 441 [2020-10-13 09:52:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:46,872 INFO L479 AbstractCegarLoop]: Abstraction has 27052 states and 33231 transitions. [2020-10-13 09:52:46,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 27052 states and 33231 transitions. [2020-10-13 09:52:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-13 09:52:46,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:46,899 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:46,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:52:46,899 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:46,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469878, now seen corresponding path program 1 times [2020-10-13 09:52:46,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:46,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836675931] [2020-10-13 09:52:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:51,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:51,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-13 09:52:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:52:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:52:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 517 [2020-10-13 09:52:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:52:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:52,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:52,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:52,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:52,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:52,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:52,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:52:52,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:52:52,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:52:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:52,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:52,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:52:52,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:52:52,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:52,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-13 09:52:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:52,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:52,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:52:52,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:52:52,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 09:52:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:52,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:52,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:52:52,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:52:52,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-13 09:52:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2020-10-13 09:52:52,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836675931] [2020-10-13 09:52:52,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:52,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:52,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478587988] [2020-10-13 09:52:52,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:52,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:52,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:52,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:52,885 INFO L87 Difference]: Start difference. First operand 27052 states and 33231 transitions. Second operand 5 states. [2020-10-13 09:53:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:08,519 INFO L93 Difference]: Finished difference Result 65436 states and 82237 transitions. [2020-10-13 09:53:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:08,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 535 [2020-10-13 09:53:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:08,636 INFO L225 Difference]: With dead ends: 65436 [2020-10-13 09:53:08,636 INFO L226 Difference]: Without dead ends: 38390 [2020-10-13 09:53:08,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38390 states. [2020-10-13 09:53:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38390 to 37684. [2020-10-13 09:53:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37684 states. [2020-10-13 09:53:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37684 states to 37684 states and 45997 transitions. [2020-10-13 09:53:09,655 INFO L78 Accepts]: Start accepts. Automaton has 37684 states and 45997 transitions. Word has length 535 [2020-10-13 09:53:09,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:09,656 INFO L479 AbstractCegarLoop]: Abstraction has 37684 states and 45997 transitions. [2020-10-13 09:53:09,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37684 states and 45997 transitions. [2020-10-13 09:53:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-13 09:53:09,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:09,690 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:53:09,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:53:09,690 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2046185964, now seen corresponding path program 1 times [2020-10-13 09:53:09,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:09,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973549085] [2020-10-13 09:53:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:14,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:14,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-13 09:53:14,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:53:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 09:53:14,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:14,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 557 [2020-10-13 09:53:14,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:53:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:14,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:14,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:14,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:53:14,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:14,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:15,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:15,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:53:15,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:53:15,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:15,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 09:53:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:15,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:53:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 09:53:15,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-13 09:53:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:15,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:15,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:15,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:53:15,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:53:15,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:53:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-13 09:53:15,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973549085] [2020-10-13 09:53:15,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:15,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:15,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240923117] [2020-10-13 09:53:15,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:15,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:15,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:15,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:16,000 INFO L87 Difference]: Start difference. First operand 37684 states and 45997 transitions. Second operand 5 states. [2020-10-13 09:53:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:26,801 INFO L93 Difference]: Finished difference Result 75385 states and 92114 transitions. [2020-10-13 09:53:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:26,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 580 [2020-10-13 09:53:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:26,909 INFO L225 Difference]: With dead ends: 75385 [2020-10-13 09:53:26,910 INFO L226 Difference]: Without dead ends: 37688 [2020-10-13 09:53:26,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37688 states. [2020-10-13 09:53:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37688 to 37684. [2020-10-13 09:53:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37684 states. [2020-10-13 09:53:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37684 states to 37684 states and 45981 transitions. [2020-10-13 09:53:27,517 INFO L78 Accepts]: Start accepts. Automaton has 37684 states and 45981 transitions. Word has length 580 [2020-10-13 09:53:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:27,518 INFO L479 AbstractCegarLoop]: Abstraction has 37684 states and 45981 transitions. [2020-10-13 09:53:27,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37684 states and 45981 transitions. [2020-10-13 09:53:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-10-13 09:53:27,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:27,543 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:53:27,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:53:27,543 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:27,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash 426552184, now seen corresponding path program 1 times [2020-10-13 09:53:27,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:27,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346177431] [2020-10-13 09:53:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-13 09:53:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:53:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:53:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 559 [2020-10-13 09:53:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:53:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:32,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:32,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:53:32,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:53:32,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 09:53:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:33,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:33,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:53:33,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-13 09:53:33,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:53:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:33,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:33,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:33,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:53:33,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:33,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:53:33,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:33,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:53:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 09:53:33,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346177431] [2020-10-13 09:53:33,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:33,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:33,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424651944] [2020-10-13 09:53:33,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:33,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:33,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:33,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:33,728 INFO L87 Difference]: Start difference. First operand 37684 states and 45981 transitions. Second operand 5 states.