/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:58:54,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:58:54,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:58:54,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:58:54,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:58:54,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:58:54,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:58:54,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:58:54,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:58:54,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:58:54,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:58:54,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:58:54,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:58:54,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:58:54,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:58:54,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:58:54,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:58:54,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:58:54,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:58:54,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:58:54,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:58:54,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:58:54,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:58:54,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:58:54,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:58:54,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:58:54,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:58:54,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:58:54,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:58:54,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:58:54,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:58:54,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:58:54,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:58:54,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:58:54,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:58:54,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:58:54,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:58:54,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:58:54,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:58:54,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:58:54,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:58:54,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 20:58:54,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:58:54,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:58:54,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:58:54,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:58:54,466 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:58:54,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:58:54,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:58:54,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:58:54,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:58:54,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:58:54,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:58:54,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:58:54,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:58:54,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:58:54,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:58:54,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:58:54,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:58:54,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:58:54,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:58:54,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:58:54,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:58:54,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:58:54,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:58:54,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:58:54,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:58:54,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:58:54,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:58:54,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:58:54,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:58:54,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:58:54,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:58:54,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:58:54,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:58:54,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:58:54,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:58:54,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-14 20:58:54,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d35560fc0/fcd09daf9a374c64b33f640e6c14c646/FLAG6325e4599 [2020-10-14 20:58:55,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:58:55,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-14 20:58:55,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d35560fc0/fcd09daf9a374c64b33f640e6c14c646/FLAG6325e4599 [2020-10-14 20:58:55,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d35560fc0/fcd09daf9a374c64b33f640e6c14c646 [2020-10-14 20:58:55,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:58:55,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:58:55,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:58:55,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:58:55,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:58:55,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:58:55" (1/1) ... [2020-10-14 20:58:55,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ed117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:55, skipping insertion in model container [2020-10-14 20:58:55,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:58:55" (1/1) ... [2020-10-14 20:58:55,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:58:55,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:58:56,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:58:56,611 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:58:56,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:58:56,951 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:58:56,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56 WrapperNode [2020-10-14 20:58:56,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:58:56,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:58:56,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:58:56,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:58:56,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:56,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:57,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:57,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:57,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:57,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:57,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... [2020-10-14 20:58:57,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:58:57,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:58:57,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:58:57,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:58:57,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:58:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:58:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:58:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:58:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:58:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:58:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:58:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:58:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:58:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:58:59,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:58:59,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:58:59,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:58:59 BoogieIcfgContainer [2020-10-14 20:58:59,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:58:59,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:58:59,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:58:59,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:58:59,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:58:55" (1/3) ... [2020-10-14 20:58:59,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e259323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:58:59, skipping insertion in model container [2020-10-14 20:58:59,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:56" (2/3) ... [2020-10-14 20:58:59,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e259323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:58:59, skipping insertion in model container [2020-10-14 20:58:59,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:58:59" (3/3) ... [2020-10-14 20:58:59,263 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2020-10-14 20:58:59,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:58:59,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:58:59,300 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:58:59,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:58:59,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:58:59,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:58:59,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:58:59,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:58:59,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:58:59,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:58:59,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:58:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 20:58:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 20:58:59,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:59,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:59,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1610348989, now seen corresponding path program 1 times [2020-10-14 20:58:59,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:59,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067414799] [2020-10-14 20:58:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:59,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:00,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 20:59:00,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-14 20:59:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 20:59:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:59:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 20:59:00,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:00,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:59:00,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067414799] [2020-10-14 20:59:00,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:59:00,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 20:59:00,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375302918] [2020-10-14 20:59:00,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:59:00,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:00,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:59:00,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:59:00,269 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2020-10-14 20:59:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:03,579 INFO L93 Difference]: Finished difference Result 998 states and 1793 transitions. [2020-10-14 20:59:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:59:03,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 20:59:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:03,604 INFO L225 Difference]: With dead ends: 998 [2020-10-14 20:59:03,604 INFO L226 Difference]: Without dead ends: 638 [2020-10-14 20:59:03,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-14 20:59:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 621. [2020-10-14 20:59:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-14 20:59:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 950 transitions. [2020-10-14 20:59:03,713 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 950 transitions. Word has length 54 [2020-10-14 20:59:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:03,714 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 950 transitions. [2020-10-14 20:59:03,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:59:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 950 transitions. [2020-10-14 20:59:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 20:59:03,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:03,721 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:03,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:59:03,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:03,723 INFO L82 PathProgramCache]: Analyzing trace with hash 990619398, now seen corresponding path program 1 times [2020-10-14 20:59:03,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:03,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267841413] [2020-10-14 20:59:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 20:59:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-14 20:59:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:59:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:59:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 20:59:05,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:05,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:05,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 20:59:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 20:59:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:05,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 20:59:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:59:05,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267841413] [2020-10-14 20:59:05,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:59:05,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:59:05,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929874613] [2020-10-14 20:59:05,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:05,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:05,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:05,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:05,399 INFO L87 Difference]: Start difference. First operand 621 states and 950 transitions. Second operand 7 states. [2020-10-14 20:59:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:08,231 INFO L93 Difference]: Finished difference Result 1868 states and 3009 transitions. [2020-10-14 20:59:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:59:08,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-14 20:59:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:08,248 INFO L225 Difference]: With dead ends: 1868 [2020-10-14 20:59:08,248 INFO L226 Difference]: Without dead ends: 1253 [2020-10-14 20:59:08,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:59:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-10-14 20:59:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1204. [2020-10-14 20:59:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-14 20:59:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1675 transitions. [2020-10-14 20:59:08,372 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1675 transitions. Word has length 124 [2020-10-14 20:59:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:08,374 INFO L479 AbstractCegarLoop]: Abstraction has 1204 states and 1675 transitions. [2020-10-14 20:59:08,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1675 transitions. [2020-10-14 20:59:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 20:59:08,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:08,389 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:08,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:59:08,390 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1199392174, now seen corresponding path program 1 times [2020-10-14 20:59:08,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:08,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792224506] [2020-10-14 20:59:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:10,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 20:59:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:59:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-10-14 20:59:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:10,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:59:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 20:59:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:10,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:10,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:10,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:59:10,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:10,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:10,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:10,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:10,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 20:59:10,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:10,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:59:10,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792224506] [2020-10-14 20:59:10,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:10,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:59:10,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2232396] [2020-10-14 20:59:10,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:59:10,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:10,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:59:10,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:59:10,696 INFO L87 Difference]: Start difference. First operand 1204 states and 1675 transitions. Second operand 6 states. [2020-10-14 20:59:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:13,257 INFO L93 Difference]: Finished difference Result 3397 states and 4845 transitions. [2020-10-14 20:59:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:59:13,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 20:59:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:13,271 INFO L225 Difference]: With dead ends: 3397 [2020-10-14 20:59:13,271 INFO L226 Difference]: Without dead ends: 2199 [2020-10-14 20:59:13,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:59:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2020-10-14 20:59:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2184. [2020-10-14 20:59:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-10-14 20:59:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2888 transitions. [2020-10-14 20:59:13,349 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2888 transitions. Word has length 134 [2020-10-14 20:59:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:13,352 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 2888 transitions. [2020-10-14 20:59:13,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:59:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2888 transitions. [2020-10-14 20:59:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 20:59:13,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:13,359 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, 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] [2020-10-14 20:59:13,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:59:13,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:13,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash 128983343, now seen corresponding path program 1 times [2020-10-14 20:59:13,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:13,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997995305] [2020-10-14 20:59:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:13,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 20:59:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-14 20:59:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:13,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 20:59:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 20:59:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:14,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:14,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:59:14,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:14,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:14,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:59:14,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 20:59:14,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:14,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:59:14,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997995305] [2020-10-14 20:59:14,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:59:14,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:59:14,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404175250] [2020-10-14 20:59:14,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:14,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:14,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:14,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:14,525 INFO L87 Difference]: Start difference. First operand 2184 states and 2888 transitions. Second operand 7 states. [2020-10-14 20:59:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:17,016 INFO L93 Difference]: Finished difference Result 3830 states and 5211 transitions. [2020-10-14 20:59:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:17,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-14 20:59:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:17,029 INFO L225 Difference]: With dead ends: 3830 [2020-10-14 20:59:17,029 INFO L226 Difference]: Without dead ends: 2612 [2020-10-14 20:59:17,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2020-10-14 20:59:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2578. [2020-10-14 20:59:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-10-14 20:59:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3314 transitions. [2020-10-14 20:59:17,103 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3314 transitions. Word has length 164 [2020-10-14 20:59:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:17,104 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 3314 transitions. [2020-10-14 20:59:17,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3314 transitions. [2020-10-14 20:59:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 20:59:17,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:17,109 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:17,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:59:17,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash 563951691, now seen corresponding path program 1 times [2020-10-14 20:59:17,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:17,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718024931] [2020-10-14 20:59:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:19,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 20:59:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2434 [2020-10-14 20:59:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:19,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:59:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 20:59:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:19,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:19,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:19,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:19,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:19,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 20:59:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:19,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 20:59:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:20,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:20,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 20:59:20,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:20,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:59:20,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718024931] [2020-10-14 20:59:20,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:20,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:20,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451194809] [2020-10-14 20:59:20,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:20,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:20,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:20,187 INFO L87 Difference]: Start difference. First operand 2578 states and 3314 transitions. Second operand 7 states. [2020-10-14 20:59:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:23,289 INFO L93 Difference]: Finished difference Result 5586 states and 7353 transitions. [2020-10-14 20:59:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:23,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 20:59:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:23,305 INFO L225 Difference]: With dead ends: 5586 [2020-10-14 20:59:23,305 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 20:59:23,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 20:59:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3370. [2020-10-14 20:59:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2020-10-14 20:59:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4293 transitions. [2020-10-14 20:59:23,390 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4293 transitions. Word has length 250 [2020-10-14 20:59:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:23,391 INFO L479 AbstractCegarLoop]: Abstraction has 3370 states and 4293 transitions. [2020-10-14 20:59:23,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4293 transitions. [2020-10-14 20:59:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 20:59:23,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:23,398 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:23,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:59:23,398 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:23,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1162201539, now seen corresponding path program 1 times [2020-10-14 20:59:23,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:23,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794524458] [2020-10-14 20:59:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:28,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:28,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 20:59:28,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:59:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 20:59:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:28,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 20:59:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:28,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:28,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:59:28,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:28,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:28,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:59:28,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 20:59:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:28,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 20:59:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:59:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:29,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:29,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:29,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 20:59:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:29,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 20:59:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:59:29,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794524458] [2020-10-14 20:59:29,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:29,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:29,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246407755] [2020-10-14 20:59:29,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:29,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:29,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:29,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:29,337 INFO L87 Difference]: Start difference. First operand 3370 states and 4293 transitions. Second operand 7 states. [2020-10-14 20:59:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:31,619 INFO L93 Difference]: Finished difference Result 7542 states and 10057 transitions. [2020-10-14 20:59:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 20:59:31,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 20:59:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:31,640 INFO L225 Difference]: With dead ends: 7542 [2020-10-14 20:59:31,640 INFO L226 Difference]: Without dead ends: 4556 [2020-10-14 20:59:31,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:59:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-10-14 20:59:31,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4530. [2020-10-14 20:59:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4530 states. [2020-10-14 20:59:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4530 states to 4530 states and 5697 transitions. [2020-10-14 20:59:31,749 INFO L78 Accepts]: Start accepts. Automaton has 4530 states and 5697 transitions. Word has length 265 [2020-10-14 20:59:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:31,750 INFO L479 AbstractCegarLoop]: Abstraction has 4530 states and 5697 transitions. [2020-10-14 20:59:31,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4530 states and 5697 transitions. [2020-10-14 20:59:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 20:59:31,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:31,756 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:31,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:59:31,757 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:31,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1707585468, now seen corresponding path program 1 times [2020-10-14 20:59:31,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:31,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129600623] [2020-10-14 20:59:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:33,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:34,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 20:59:34,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-14 20:59:34,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:34,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:59:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 20:59:34,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:34,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:34,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:34,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:34,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:34,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:34,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:34,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 20:59:34,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:34,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:34,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:34,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 20:59:34,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 20:59:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:34,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 20:59:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:59:34,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129600623] [2020-10-14 20:59:34,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:34,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:34,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600602624] [2020-10-14 20:59:34,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:34,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:34,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:34,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:34,812 INFO L87 Difference]: Start difference. First operand 4530 states and 5697 transitions. Second operand 7 states. [2020-10-14 20:59:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:37,719 INFO L93 Difference]: Finished difference Result 10470 states and 13637 transitions. [2020-10-14 20:59:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:37,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-14 20:59:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:37,749 INFO L225 Difference]: With dead ends: 10470 [2020-10-14 20:59:37,749 INFO L226 Difference]: Without dead ends: 6324 [2020-10-14 20:59:37,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2020-10-14 20:59:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 6306. [2020-10-14 20:59:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6306 states. [2020-10-14 20:59:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6306 states to 6306 states and 8107 transitions. [2020-10-14 20:59:37,916 INFO L78 Accepts]: Start accepts. Automaton has 6306 states and 8107 transitions. Word has length 271 [2020-10-14 20:59:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:37,917 INFO L479 AbstractCegarLoop]: Abstraction has 6306 states and 8107 transitions. [2020-10-14 20:59:37,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6306 states and 8107 transitions. [2020-10-14 20:59:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 20:59:37,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:37,930 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:37,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:59:37,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash -663289629, now seen corresponding path program 1 times [2020-10-14 20:59:37,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:37,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981982391] [2020-10-14 20:59:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:38,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 20:59:39,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-14 20:59:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:39,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:59:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 20:59:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:39,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:39,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:39,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:39,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:59:39,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:39,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:39,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:39,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:59:39,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 20:59:39,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:39,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:59:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:59:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:59:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 20:59:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 20:59:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:59:39,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981982391] [2020-10-14 20:59:39,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:39,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:39,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941924344] [2020-10-14 20:59:39,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:39,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:39,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:39,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:39,969 INFO L87 Difference]: Start difference. First operand 6306 states and 8107 transitions. Second operand 7 states. [2020-10-14 20:59:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:43,945 INFO L93 Difference]: Finished difference Result 13986 states and 18525 transitions. [2020-10-14 20:59:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:43,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-14 20:59:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:43,977 INFO L225 Difference]: With dead ends: 13986 [2020-10-14 20:59:43,977 INFO L226 Difference]: Without dead ends: 8064 [2020-10-14 20:59:43,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8064 states. [2020-10-14 20:59:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8064 to 8053. [2020-10-14 20:59:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-14 20:59:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 10554 transitions. [2020-10-14 20:59:44,158 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 10554 transitions. Word has length 277 [2020-10-14 20:59:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:44,158 INFO L479 AbstractCegarLoop]: Abstraction has 8053 states and 10554 transitions. [2020-10-14 20:59:44,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 10554 transitions. [2020-10-14 20:59:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 20:59:44,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:44,169 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:44,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 20:59:44,169 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:44,170 INFO L82 PathProgramCache]: Analyzing trace with hash 125609320, now seen corresponding path program 1 times [2020-10-14 20:59:44,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:44,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647194462] [2020-10-14 20:59:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:45,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:45,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 20:59:45,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-14 20:59:45,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:45,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:59:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 20:59:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:59:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:45,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:45,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:45,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:45,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 20:59:45,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:45,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 20:59:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:46,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:46,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:59:46,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:46,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 20:59:46,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:46,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:59:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 20:59:46,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647194462] [2020-10-14 20:59:46,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:46,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:46,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106730057] [2020-10-14 20:59:46,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:59:46,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:46,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:59:46,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:59:46,360 INFO L87 Difference]: Start difference. First operand 8053 states and 10554 transitions. Second operand 8 states. [2020-10-14 20:59:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:50,046 INFO L93 Difference]: Finished difference Result 17920 states and 23714 transitions. [2020-10-14 20:59:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 20:59:50,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 280 [2020-10-14 20:59:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:50,086 INFO L225 Difference]: With dead ends: 17920 [2020-10-14 20:59:50,086 INFO L226 Difference]: Without dead ends: 11797 [2020-10-14 20:59:50,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 20:59:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11797 states. [2020-10-14 20:59:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11797 to 11561. [2020-10-14 20:59:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11561 states. [2020-10-14 20:59:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11561 states to 11561 states and 14992 transitions. [2020-10-14 20:59:50,446 INFO L78 Accepts]: Start accepts. Automaton has 11561 states and 14992 transitions. Word has length 280 [2020-10-14 20:59:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:50,447 INFO L479 AbstractCegarLoop]: Abstraction has 11561 states and 14992 transitions. [2020-10-14 20:59:50,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:59:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11561 states and 14992 transitions. [2020-10-14 20:59:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 20:59:50,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:50,458 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:50,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 20:59:50,458 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:50,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1863934856, now seen corresponding path program 1 times [2020-10-14 20:59:50,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:50,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121726766] [2020-10-14 20:59:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:51,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:51,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 20:59:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-14 20:59:51,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:51,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 20:59:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 20:59:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:51,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:51,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:51,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:59:51,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:51,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:51,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:51,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:59:51,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 20:59:51,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:51,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:59:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:51,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 20:59:51,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 20:59:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:51,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 20:59:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 20:59:51,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121726766] [2020-10-14 20:59:51,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:51,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:59:51,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348334678] [2020-10-14 20:59:51,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:59:51,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:51,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:59:51,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:59:51,775 INFO L87 Difference]: Start difference. First operand 11561 states and 14992 transitions. Second operand 5 states. [2020-10-14 20:59:53,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:53,912 INFO L93 Difference]: Finished difference Result 13279 states and 17237 transitions. [2020-10-14 20:59:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:59:53,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-14 20:59:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:53,973 INFO L225 Difference]: With dead ends: 13279 [2020-10-14 20:59:53,974 INFO L226 Difference]: Without dead ends: 13277 [2020-10-14 20:59:53,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:59:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2020-10-14 20:59:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 13079. [2020-10-14 20:59:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13079 states. [2020-10-14 20:59:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13079 states to 13079 states and 16977 transitions. [2020-10-14 20:59:54,233 INFO L78 Accepts]: Start accepts. Automaton has 13079 states and 16977 transitions. Word has length 281 [2020-10-14 20:59:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:54,234 INFO L479 AbstractCegarLoop]: Abstraction has 13079 states and 16977 transitions. [2020-10-14 20:59:54,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:59:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13079 states and 16977 transitions. [2020-10-14 20:59:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 20:59:54,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:54,242 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:59:54,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 20:59:54,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:54,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:54,243 INFO L82 PathProgramCache]: Analyzing trace with hash 869442118, now seen corresponding path program 1 times [2020-10-14 20:59:54,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:54,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418506336] [2020-10-14 20:59:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:56,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 20:59:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:59:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-10-14 20:59:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:56,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:59:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 20:59:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:56,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:56,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:56,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:59:56,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:56,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:56,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:56,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:56,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:56,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:59:56,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 20:59:56,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:56,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:59:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:59:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:57,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:57,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:57,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 20:59:57,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:57,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 122 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:59:57,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418506336] [2020-10-14 20:59:57,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:57,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:57,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195395413] [2020-10-14 20:59:57,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:57,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:57,318 INFO L87 Difference]: Start difference. First operand 13079 states and 16977 transitions. Second operand 7 states. [2020-10-14 21:00:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:01,222 INFO L93 Difference]: Finished difference Result 28671 states and 37354 transitions. [2020-10-14 21:00:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:00:01,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 21:00:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:01,270 INFO L225 Difference]: With dead ends: 28671 [2020-10-14 21:00:01,270 INFO L226 Difference]: Without dead ends: 15976 [2020-10-14 21:00:01,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:00:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15976 states. [2020-10-14 21:00:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15976 to 15957. [2020-10-14 21:00:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15957 states. [2020-10-14 21:00:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15957 states to 15957 states and 20488 transitions. [2020-10-14 21:00:01,592 INFO L78 Accepts]: Start accepts. Automaton has 15957 states and 20488 transitions. Word has length 281 [2020-10-14 21:00:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:01,593 INFO L479 AbstractCegarLoop]: Abstraction has 15957 states and 20488 transitions. [2020-10-14 21:00:01,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 15957 states and 20488 transitions. [2020-10-14 21:00:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 21:00:01,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:01,603 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:01,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:00:01,604 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:01,604 INFO L82 PathProgramCache]: Analyzing trace with hash 11397960, now seen corresponding path program 1 times [2020-10-14 21:00:01,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:01,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634677525] [2020-10-14 21:00:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:02,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:02,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 21:00:02,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-14 21:00:02,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:02,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:00:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:00:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 21:00:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:00:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:02,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:03,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:03,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:03,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:03,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:00:03,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:03,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:00:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:03,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:00:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:03,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:00:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 21:00:03,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:03,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:00:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 21:00:03,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634677525] [2020-10-14 21:00:03,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:03,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:00:03,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462313899] [2020-10-14 21:00:03,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:00:03,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:03,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:00:03,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:00:03,719 INFO L87 Difference]: Start difference. First operand 15957 states and 20488 transitions. Second operand 6 states. [2020-10-14 21:00:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:06,073 INFO L93 Difference]: Finished difference Result 29426 states and 37975 transitions. [2020-10-14 21:00:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:00:06,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2020-10-14 21:00:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:06,124 INFO L225 Difference]: With dead ends: 29426 [2020-10-14 21:00:06,124 INFO L226 Difference]: Without dead ends: 15973 [2020-10-14 21:00:06,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15973 states. [2020-10-14 21:00:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15973 to 15957. [2020-10-14 21:00:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15957 states. [2020-10-14 21:00:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15957 states to 15957 states and 19987 transitions. [2020-10-14 21:00:06,418 INFO L78 Accepts]: Start accepts. Automaton has 15957 states and 19987 transitions. Word has length 292 [2020-10-14 21:00:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:06,420 INFO L479 AbstractCegarLoop]: Abstraction has 15957 states and 19987 transitions. [2020-10-14 21:00:06,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:00:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 15957 states and 19987 transitions. [2020-10-14 21:00:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 21:00:06,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:06,432 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:06,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:00:06,432 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:06,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:06,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2077675608, now seen corresponding path program 1 times [2020-10-14 21:00:06,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:06,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227517695] [2020-10-14 21:00:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 21:00:06,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 21:00:06,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:00:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:00:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:06,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:06,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:07,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:07,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:07,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:07,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:07,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 21:00:07,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:07,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:00:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:07,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:00:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:07,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:07,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:00:07,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 21:00:07,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:07,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:07,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:00:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:00:07,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227517695] [2020-10-14 21:00:07,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:07,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:07,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558942967] [2020-10-14 21:00:07,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:07,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:07,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:07,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:07,885 INFO L87 Difference]: Start difference. First operand 15957 states and 19987 transitions. Second operand 7 states. [2020-10-14 21:00:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:10,402 INFO L93 Difference]: Finished difference Result 30205 states and 37940 transitions. [2020-10-14 21:00:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:00:10,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-14 21:00:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:10,447 INFO L225 Difference]: With dead ends: 30205 [2020-10-14 21:00:10,448 INFO L226 Difference]: Without dead ends: 16752 [2020-10-14 21:00:10,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:00:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16752 states. [2020-10-14 21:00:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16752 to 16723. [2020-10-14 21:00:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16723 states. [2020-10-14 21:00:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16723 states to 16723 states and 20900 transitions. [2020-10-14 21:00:10,771 INFO L78 Accepts]: Start accepts. Automaton has 16723 states and 20900 transitions. Word has length 295 [2020-10-14 21:00:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:10,771 INFO L479 AbstractCegarLoop]: Abstraction has 16723 states and 20900 transitions. [2020-10-14 21:00:10,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 16723 states and 20900 transitions. [2020-10-14 21:00:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 21:00:10,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:10,786 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:10,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:00:10,786 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:10,787 INFO L82 PathProgramCache]: Analyzing trace with hash -139801513, now seen corresponding path program 1 times [2020-10-14 21:00:10,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:10,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110775701] [2020-10-14 21:00:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:13,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:13,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 21:00:13,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:00:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2931 [2020-10-14 21:00:13,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:13,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:00:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 21:00:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:00:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:13,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:13,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:13,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:13,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 21:00:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 21:00:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:00:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 122 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:00:14,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110775701] [2020-10-14 21:00:14,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:14,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:00:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886259111] [2020-10-14 21:00:14,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:00:14,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:00:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:00:14,400 INFO L87 Difference]: Start difference. First operand 16723 states and 20900 transitions. Second operand 6 states. [2020-10-14 21:00:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:17,195 INFO L93 Difference]: Finished difference Result 32850 states and 41111 transitions. [2020-10-14 21:00:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:00:17,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 319 [2020-10-14 21:00:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:17,234 INFO L225 Difference]: With dead ends: 32850 [2020-10-14 21:00:17,234 INFO L226 Difference]: Without dead ends: 16511 [2020-10-14 21:00:17,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:00:17,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16511 states. [2020-10-14 21:00:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16511 to 16493. [2020-10-14 21:00:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16493 states. [2020-10-14 21:00:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16493 states to 16493 states and 20305 transitions. [2020-10-14 21:00:17,496 INFO L78 Accepts]: Start accepts. Automaton has 16493 states and 20305 transitions. Word has length 319 [2020-10-14 21:00:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:17,496 INFO L479 AbstractCegarLoop]: Abstraction has 16493 states and 20305 transitions. [2020-10-14 21:00:17,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:00:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 16493 states and 20305 transitions. [2020-10-14 21:00:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 21:00:17,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:17,505 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, 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, 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] [2020-10-14 21:00:17,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:00:17,505 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:17,506 INFO L82 PathProgramCache]: Analyzing trace with hash -533599445, now seen corresponding path program 1 times [2020-10-14 21:00:17,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:17,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824270722] [2020-10-14 21:00:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:22,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:22,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 21:00:22,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:00:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 21:00:22,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:22,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:00:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:00:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 21:00:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:22,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:00:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:22,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:22,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:22,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 21:00:22,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:22,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:00:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:23,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:00:23,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:00:23,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:23,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:00:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:00:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 21:00:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:00:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 21:00:23,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:23,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:00:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 292 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 21:00:24,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824270722] [2020-10-14 21:00:24,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:24,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:00:24,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440519082] [2020-10-14 21:00:24,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:00:24,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:00:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:00:24,021 INFO L87 Difference]: Start difference. First operand 16493 states and 20305 transitions. Second operand 9 states. [2020-10-14 21:00:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:27,536 INFO L93 Difference]: Finished difference Result 30547 states and 37757 transitions. [2020-10-14 21:00:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:00:27,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 323 [2020-10-14 21:00:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:27,574 INFO L225 Difference]: With dead ends: 30547 [2020-10-14 21:00:27,575 INFO L226 Difference]: Without dead ends: 16522 [2020-10-14 21:00:27,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-14 21:00:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16522 states. [2020-10-14 21:00:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16522 to 15545. [2020-10-14 21:00:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15545 states. [2020-10-14 21:00:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15545 states to 15545 states and 19072 transitions. [2020-10-14 21:00:27,868 INFO L78 Accepts]: Start accepts. Automaton has 15545 states and 19072 transitions. Word has length 323 [2020-10-14 21:00:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:27,869 INFO L479 AbstractCegarLoop]: Abstraction has 15545 states and 19072 transitions. [2020-10-14 21:00:27,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:00:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 15545 states and 19072 transitions. [2020-10-14 21:00:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 21:00:27,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:27,878 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:27,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 21:00:27,878 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1574929381, now seen corresponding path program 1 times [2020-10-14 21:00:27,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:27,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206051772] [2020-10-14 21:00:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 330 [2020-10-14 21:00:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:29,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:29,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:29,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:29,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:00:29,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:29,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:00:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:30,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:30,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:00:30,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:00:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:00:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:00:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:00:30,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 21:00:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:00:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 122 proven. 96 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:00:30,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206051772] [2020-10-14 21:00:30,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:30,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:00:30,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505980236] [2020-10-14 21:00:30,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:00:30,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:30,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:00:30,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:00:30,494 INFO L87 Difference]: Start difference. First operand 15545 states and 19072 transitions. Second operand 9 states. [2020-10-14 21:00:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:34,559 INFO L93 Difference]: Finished difference Result 32303 states and 42824 transitions. [2020-10-14 21:00:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:00:34,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 324 [2020-10-14 21:00:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:34,631 INFO L225 Difference]: With dead ends: 32303 [2020-10-14 21:00:34,631 INFO L226 Difference]: Without dead ends: 19066 [2020-10-14 21:00:34,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:00:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2020-10-14 21:00:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 18658. [2020-10-14 21:00:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18658 states. [2020-10-14 21:00:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18658 states to 18658 states and 23007 transitions. [2020-10-14 21:00:35,062 INFO L78 Accepts]: Start accepts. Automaton has 18658 states and 23007 transitions. Word has length 324 [2020-10-14 21:00:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:35,063 INFO L479 AbstractCegarLoop]: Abstraction has 18658 states and 23007 transitions. [2020-10-14 21:00:35,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:00:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18658 states and 23007 transitions. [2020-10-14 21:00:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 21:00:35,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:35,074 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, 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, 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] [2020-10-14 21:00:35,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 21:00:35,075 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1667524706, now seen corresponding path program 1 times [2020-10-14 21:00:35,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:35,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600427366] [2020-10-14 21:00:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:39,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:39,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 21:00:39,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4370 [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-14 21:00:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:39,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:39,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:00:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:39,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:00:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:39,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:39,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 21:00:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:39,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:39,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:00:39,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 21:00:39,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:39,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:00:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:00:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-14 21:00:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:00:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:00:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:40,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:00:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 223 proven. 93 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 21:00:40,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600427366] [2020-10-14 21:00:40,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:40,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:00:40,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996680719] [2020-10-14 21:00:40,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:00:40,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:40,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:00:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:00:40,153 INFO L87 Difference]: Start difference. First operand 18658 states and 23007 transitions. Second operand 10 states. [2020-10-14 21:00:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:46,511 INFO L93 Difference]: Finished difference Result 43401 states and 54976 transitions. [2020-10-14 21:00:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 21:00:46,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2020-10-14 21:00:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:46,600 INFO L225 Difference]: With dead ends: 43401 [2020-10-14 21:00:46,601 INFO L226 Difference]: Without dead ends: 27072 [2020-10-14 21:00:46,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-14 21:00:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27072 states. [2020-10-14 21:00:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27072 to 25017. [2020-10-14 21:00:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25017 states. [2020-10-14 21:00:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25017 states to 25017 states and 30949 transitions. [2020-10-14 21:00:47,275 INFO L78 Accepts]: Start accepts. Automaton has 25017 states and 30949 transitions. Word has length 344 [2020-10-14 21:00:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:47,276 INFO L479 AbstractCegarLoop]: Abstraction has 25017 states and 30949 transitions. [2020-10-14 21:00:47,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:00:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25017 states and 30949 transitions. [2020-10-14 21:00:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 21:00:47,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:47,294 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:00:47,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 21:00:47,295 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:47,295 INFO L82 PathProgramCache]: Analyzing trace with hash -715697309, now seen corresponding path program 1 times [2020-10-14 21:00:47,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:47,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742523376] [2020-10-14 21:00:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:49,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:00:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:49,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:49,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:49,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:49,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:00:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:00:49,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:49,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:00:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:49,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 21:00:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:00:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:00:50,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742523376] [2020-10-14 21:00:50,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:50,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:50,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40515616] [2020-10-14 21:00:50,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:50,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:50,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:50,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:50,055 INFO L87 Difference]: Start difference. First operand 25017 states and 30949 transitions. Second operand 7 states. [2020-10-14 21:00:52,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:52,849 INFO L93 Difference]: Finished difference Result 55750 states and 68952 transitions. [2020-10-14 21:00:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:00:52,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-14 21:00:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:52,902 INFO L225 Difference]: With dead ends: 55750 [2020-10-14 21:00:52,903 INFO L226 Difference]: Without dead ends: 30734 [2020-10-14 21:00:52,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:00:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30734 states. [2020-10-14 21:00:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30734 to 28810. [2020-10-14 21:00:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28810 states. [2020-10-14 21:00:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28810 states to 28810 states and 34918 transitions. [2020-10-14 21:00:53,441 INFO L78 Accepts]: Start accepts. Automaton has 28810 states and 34918 transitions. Word has length 354 [2020-10-14 21:00:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:53,442 INFO L479 AbstractCegarLoop]: Abstraction has 28810 states and 34918 transitions. [2020-10-14 21:00:53,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 28810 states and 34918 transitions. [2020-10-14 21:00:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-14 21:00:53,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:53,460 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, 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, 2, 2, 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] [2020-10-14 21:00:53,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 21:00:53,461 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash -100766097, now seen corresponding path program 1 times [2020-10-14 21:00:53,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:53,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031035011] [2020-10-14 21:00:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 21:00:56,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 372 [2020-10-14 21:00:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:00:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:00:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:56,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:00:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:00:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:56,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:00:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:56,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:56,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:00:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:00:56,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:56,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:00:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:00:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 266 proven. 61 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:00:57,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031035011] [2020-10-14 21:00:57,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:57,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:00:57,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534140995] [2020-10-14 21:00:57,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:00:57,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:57,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:00:57,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:00:57,053 INFO L87 Difference]: Start difference. First operand 28810 states and 34918 transitions. Second operand 8 states. [2020-10-14 21:01:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:01,065 INFO L93 Difference]: Finished difference Result 31926 states and 38603 transitions. [2020-10-14 21:01:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:01,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-14 21:01:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:01,118 INFO L225 Difference]: With dead ends: 31926 [2020-10-14 21:01:01,119 INFO L226 Difference]: Without dead ends: 31924 [2020-10-14 21:01:01,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:01:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31924 states. [2020-10-14 21:01:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31924 to 31684. [2020-10-14 21:01:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31684 states. [2020-10-14 21:01:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31684 states to 31684 states and 38297 transitions. [2020-10-14 21:01:01,586 INFO L78 Accepts]: Start accepts. Automaton has 31684 states and 38297 transitions. Word has length 364 [2020-10-14 21:01:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:01,587 INFO L479 AbstractCegarLoop]: Abstraction has 31684 states and 38297 transitions. [2020-10-14 21:01:01,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:01:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 31684 states and 38297 transitions. [2020-10-14 21:01:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-14 21:01:01,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:01,598 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, 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, 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] [2020-10-14 21:01:01,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 21:01:01,599 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:01,599 INFO L82 PathProgramCache]: Analyzing trace with hash 278846823, now seen corresponding path program 1 times [2020-10-14 21:01:01,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:01,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605269842] [2020-10-14 21:01:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:04,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:04,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 21:01:04,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:01:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2363 [2020-10-14 21:01:04,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:04,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:01:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:01:04,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:04,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:01:04,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:04,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:04,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:01:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:04,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:01:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:04,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:04,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:01:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:04,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-14 21:01:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:01:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 241 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:01:04,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605269842] [2020-10-14 21:01:04,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:04,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:04,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262314866] [2020-10-14 21:01:04,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:04,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:04,502 INFO L87 Difference]: Start difference. First operand 31684 states and 38297 transitions. Second operand 7 states. [2020-10-14 21:01:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:08,140 INFO L93 Difference]: Finished difference Result 64289 states and 77252 transitions. [2020-10-14 21:01:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:01:08,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-14 21:01:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:08,205 INFO L225 Difference]: With dead ends: 64289 [2020-10-14 21:01:08,205 INFO L226 Difference]: Without dead ends: 35700 [2020-10-14 21:01:08,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35700 states. [2020-10-14 21:01:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35700 to 35436. [2020-10-14 21:01:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35436 states. [2020-10-14 21:01:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35436 states to 35436 states and 41909 transitions. [2020-10-14 21:01:08,794 INFO L78 Accepts]: Start accepts. Automaton has 35436 states and 41909 transitions. Word has length 364 [2020-10-14 21:01:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:08,795 INFO L479 AbstractCegarLoop]: Abstraction has 35436 states and 41909 transitions. [2020-10-14 21:01:08,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35436 states and 41909 transitions. [2020-10-14 21:01:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 21:01:08,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:08,815 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, 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:01:08,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 21:01:08,815 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:08,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1885641266, now seen corresponding path program 1 times [2020-10-14 21:01:08,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:08,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394757367] [2020-10-14 21:01:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 21:01:13,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:01:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4680 [2020-10-14 21:01:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:01:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:01:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:13,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:01:13,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:13,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:13,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:13,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:01:13,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:01:13,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:01:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:13,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:01:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:01:13,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 21:01:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-14 21:01:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:14,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:14,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 21:01:14,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:14,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:01:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:01:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 252 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:01:14,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394757367] [2020-10-14 21:01:14,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:14,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:01:14,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003574944] [2020-10-14 21:01:14,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:01:14,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:14,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:01:14,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:01:14,254 INFO L87 Difference]: Start difference. First operand 35436 states and 41909 transitions. Second operand 8 states. [2020-10-14 21:01:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:18,893 INFO L93 Difference]: Finished difference Result 70527 states and 83533 transitions. [2020-10-14 21:01:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:01:18,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 391 [2020-10-14 21:01:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:18,964 INFO L225 Difference]: With dead ends: 70527 [2020-10-14 21:01:18,964 INFO L226 Difference]: Without dead ends: 38362 [2020-10-14 21:01:18,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:01:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38362 states. [2020-10-14 21:01:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38362 to 37510. [2020-10-14 21:01:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37510 states. [2020-10-14 21:01:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37510 states to 37510 states and 44093 transitions. [2020-10-14 21:01:19,450 INFO L78 Accepts]: Start accepts. Automaton has 37510 states and 44093 transitions. Word has length 391 [2020-10-14 21:01:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:19,450 INFO L479 AbstractCegarLoop]: Abstraction has 37510 states and 44093 transitions. [2020-10-14 21:01:19,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:01:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 37510 states and 44093 transitions. [2020-10-14 21:01:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-14 21:01:19,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:19,464 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:19,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 21:01:19,464 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash 636376888, now seen corresponding path program 1 times [2020-10-14 21:01:19,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:19,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458180717] [2020-10-14 21:01:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:19,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:19,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-14 21:01:19,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 21:01:19,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:19,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 21:01:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:01:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:20,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:20,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:01:20,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:20,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 21:01:20,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:20,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:01:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:20,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:01:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:20,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:01:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:20,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:20,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 21:01:20,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458180717] [2020-10-14 21:01:20,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:20,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:20,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351136559] [2020-10-14 21:01:20,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:20,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:20,611 INFO L87 Difference]: Start difference. First operand 37510 states and 44093 transitions. Second operand 7 states. [2020-10-14 21:01:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:24,193 INFO L93 Difference]: Finished difference Result 70681 states and 83247 transitions. [2020-10-14 21:01:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:24,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-14 21:01:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:24,261 INFO L225 Difference]: With dead ends: 70681 [2020-10-14 21:01:24,261 INFO L226 Difference]: Without dead ends: 37796 [2020-10-14 21:01:24,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37796 states. [2020-10-14 21:01:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37796 to 37322. [2020-10-14 21:01:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37322 states. [2020-10-14 21:01:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37322 states to 37322 states and 43835 transitions. [2020-10-14 21:01:24,976 INFO L78 Accepts]: Start accepts. Automaton has 37322 states and 43835 transitions. Word has length 411 [2020-10-14 21:01:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:24,977 INFO L479 AbstractCegarLoop]: Abstraction has 37322 states and 43835 transitions. [2020-10-14 21:01:24,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 37322 states and 43835 transitions. [2020-10-14 21:01:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-14 21:01:24,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:24,989 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:24,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 21:01:24,989 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1360732399, now seen corresponding path program 1 times [2020-10-14 21:01:24,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:24,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179637023] [2020-10-14 21:01:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:25,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:28,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 21:01:28,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3542 [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 21:01:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:28,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:28,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:01:28,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 21:01:28,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:28,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:01:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:29,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:29,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:01:29,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 21:01:29,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 21:01:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:29,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:01:29,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:29,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:01:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 258 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:01:29,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179637023] [2020-10-14 21:01:29,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:29,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:29,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012198683] [2020-10-14 21:01:29,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:29,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:29,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:29,468 INFO L87 Difference]: Start difference. First operand 37322 states and 43835 transitions. Second operand 7 states. [2020-10-14 21:01:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:34,058 INFO L93 Difference]: Finished difference Result 75680 states and 88972 transitions. [2020-10-14 21:01:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:34,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-14 21:01:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:34,124 INFO L225 Difference]: With dead ends: 75680 [2020-10-14 21:01:34,124 INFO L226 Difference]: Without dead ends: 38742 [2020-10-14 21:01:34,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38742 states. [2020-10-14 21:01:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38742 to 38656. [2020-10-14 21:01:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38656 states. [2020-10-14 21:01:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38656 states to 38656 states and 45188 transitions. [2020-10-14 21:01:34,566 INFO L78 Accepts]: Start accepts. Automaton has 38656 states and 45188 transitions. Word has length 421 [2020-10-14 21:01:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:34,567 INFO L479 AbstractCegarLoop]: Abstraction has 38656 states and 45188 transitions. [2020-10-14 21:01:34,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 38656 states and 45188 transitions. [2020-10-14 21:01:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-14 21:01:34,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:34,575 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:01:34,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 21:01:34,575 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:34,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1503511111, now seen corresponding path program 1 times [2020-10-14 21:01:34,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:34,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366575461] [2020-10-14 21:01:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:36,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-14 21:01:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 21:01:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1764 [2020-10-14 21:01:36,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:36,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 21:01:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:36,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:36,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:36,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:01:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:01:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:36,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 21:01:36,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:01:36,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:36,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 21:01:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 21:01:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:36,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 21:01:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:36,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:36,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:36,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-14 21:01:36,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366575461] [2020-10-14 21:01:36,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:36,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:01:36,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084578107] [2020-10-14 21:01:36,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:01:36,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:36,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:01:36,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:01:36,931 INFO L87 Difference]: Start difference. First operand 38656 states and 45188 transitions. Second operand 6 states. [2020-10-14 21:01:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:39,222 INFO L93 Difference]: Finished difference Result 72946 states and 85321 transitions. [2020-10-14 21:01:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:01:39,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 424 [2020-10-14 21:01:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:39,298 INFO L225 Difference]: With dead ends: 72946 [2020-10-14 21:01:39,298 INFO L226 Difference]: Without dead ends: 37948 [2020-10-14 21:01:39,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37948 states. [2020-10-14 21:01:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37948 to 37855. [2020-10-14 21:01:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37855 states. [2020-10-14 21:01:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37855 states to 37855 states and 44113 transitions. [2020-10-14 21:01:39,790 INFO L78 Accepts]: Start accepts. Automaton has 37855 states and 44113 transitions. Word has length 424 [2020-10-14 21:01:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:39,791 INFO L479 AbstractCegarLoop]: Abstraction has 37855 states and 44113 transitions. [2020-10-14 21:01:39,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:01:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 37855 states and 44113 transitions. [2020-10-14 21:01:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-14 21:01:39,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:39,799 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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:39,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 21:01:39,799 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:39,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1375810383, now seen corresponding path program 1 times [2020-10-14 21:01:39,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:39,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479236543] [2020-10-14 21:01:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:42,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-14 21:01:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2411 [2020-10-14 21:01:42,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:42,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:42,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 21:01:42,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:01:42,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:42,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:42,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:01:42,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:42,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:01:42,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:42,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:01:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:42,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:01:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 21:01:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:42,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:01:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:42,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:42,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:01:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 21:01:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:01:42,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:42,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:01:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-14 21:01:42,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479236543] [2020-10-14 21:01:42,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:42,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:42,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976929348] [2020-10-14 21:01:42,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:42,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:42,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:42,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:42,940 INFO L87 Difference]: Start difference. First operand 37855 states and 44113 transitions. Second operand 7 states. [2020-10-14 21:01:46,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:46,668 INFO L93 Difference]: Finished difference Result 74654 states and 87076 transitions. [2020-10-14 21:01:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:01:46,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 438 [2020-10-14 21:01:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:46,738 INFO L225 Difference]: With dead ends: 74654 [2020-10-14 21:01:46,738 INFO L226 Difference]: Without dead ends: 36993 [2020-10-14 21:01:46,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36993 states. [2020-10-14 21:01:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36993 to 36902. [2020-10-14 21:01:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36902 states. [2020-10-14 21:01:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36902 states to 36902 states and 42148 transitions. [2020-10-14 21:01:47,176 INFO L78 Accepts]: Start accepts. Automaton has 36902 states and 42148 transitions. Word has length 438 [2020-10-14 21:01:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:47,176 INFO L479 AbstractCegarLoop]: Abstraction has 36902 states and 42148 transitions. [2020-10-14 21:01:47,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 36902 states and 42148 transitions. [2020-10-14 21:01:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 21:01:47,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:47,188 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:01:47,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 21:01:47,188 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1973149767, now seen corresponding path program 1 times [2020-10-14 21:01:47,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:47,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822156639] [2020-10-14 21:01:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-14 21:01:47,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-14 21:01:47,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-14 21:01:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 21:01:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:48,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:48,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:01:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:48,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:48,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:48,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:48,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:01:48,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:48,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:01:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:48,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:48,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:01:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:01:48,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:48,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 21:01:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:48,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:48,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:01:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-14 21:01:48,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822156639] [2020-10-14 21:01:48,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:48,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:01:48,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649764644] [2020-10-14 21:01:48,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:01:48,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:01:48,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:01:48,659 INFO L87 Difference]: Start difference. First operand 36902 states and 42148 transitions. Second operand 5 states. [2020-10-14 21:01:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:51,921 INFO L93 Difference]: Finished difference Result 71367 states and 81565 transitions. [2020-10-14 21:01:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:01:51,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 440 [2020-10-14 21:01:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:51,981 INFO L225 Difference]: With dead ends: 71367 [2020-10-14 21:01:51,981 INFO L226 Difference]: Without dead ends: 37364 [2020-10-14 21:01:52,013 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 [2020-10-14 21:01:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37364 states. [2020-10-14 21:01:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37364 to 37272. [2020-10-14 21:01:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37272 states. [2020-10-14 21:01:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37272 states to 37272 states and 42443 transitions. [2020-10-14 21:01:52,428 INFO L78 Accepts]: Start accepts. Automaton has 37272 states and 42443 transitions. Word has length 440 [2020-10-14 21:01:52,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:52,429 INFO L479 AbstractCegarLoop]: Abstraction has 37272 states and 42443 transitions. [2020-10-14 21:01:52,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:01:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 37272 states and 42443 transitions. [2020-10-14 21:01:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-14 21:01:52,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:52,441 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:52,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 21:01:52,442 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:52,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1597087573, now seen corresponding path program 1 times [2020-10-14 21:01:52,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:52,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330988551] [2020-10-14 21:01:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-14 21:01:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-14 21:01:54,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:01:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 479 [2020-10-14 21:01:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:01:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:01:54,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:01:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:55,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 21:01:55,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 21:01:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:55,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 21:01:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:01:55,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 21:01:55,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:01:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:01:55,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 256 proven. 143 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-14 21:01:55,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330988551] [2020-10-14 21:01:55,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:55,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:01:55,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332157333] [2020-10-14 21:01:55,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:01:55,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:55,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:01:55,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:01:55,791 INFO L87 Difference]: Start difference. First operand 37272 states and 42443 transitions. Second operand 11 states. [2020-10-14 21:02:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:02,384 INFO L93 Difference]: Finished difference Result 54763 states and 62504 transitions. [2020-10-14 21:02:02,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 21:02:02,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 471 [2020-10-14 21:02:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:02,477 INFO L225 Difference]: With dead ends: 54763 [2020-10-14 21:02:02,477 INFO L226 Difference]: Without dead ends: 54761 [2020-10-14 21:02:02,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-14 21:02:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54761 states. [2020-10-14 21:02:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54761 to 52972. [2020-10-14 21:02:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52972 states. [2020-10-14 21:02:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52972 states to 52972 states and 60062 transitions. [2020-10-14 21:02:03,114 INFO L78 Accepts]: Start accepts. Automaton has 52972 states and 60062 transitions. Word has length 471 [2020-10-14 21:02:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:03,114 INFO L479 AbstractCegarLoop]: Abstraction has 52972 states and 60062 transitions. [2020-10-14 21:02:03,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 21:02:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 52972 states and 60062 transitions. [2020-10-14 21:02:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-14 21:02:03,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:03,132 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, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:03,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 21:02:03,133 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:03,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:03,133 INFO L82 PathProgramCache]: Analyzing trace with hash 361971616, now seen corresponding path program 1 times [2020-10-14 21:02:03,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:03,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225298638] [2020-10-14 21:02:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:05,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2134 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 21:02:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:05,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:05,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:05,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:02:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:05,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:02:05,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:02:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:05,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:02:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 21:02:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:05,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:05,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:02:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 483 proven. 96 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 21:02:06,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225298638] [2020-10-14 21:02:06,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:06,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:02:06,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792347205] [2020-10-14 21:02:06,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:02:06,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:02:06,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:02:06,076 INFO L87 Difference]: Start difference. First operand 52972 states and 60062 transitions. Second operand 8 states. [2020-10-14 21:02:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:11,556 INFO L93 Difference]: Finished difference Result 76398 states and 86395 transitions. [2020-10-14 21:02:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:02:11,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 496 [2020-10-14 21:02:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:11,703 INFO L225 Difference]: With dead ends: 76398 [2020-10-14 21:02:11,704 INFO L226 Difference]: Without dead ends: 76396 [2020-10-14 21:02:11,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:02:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76396 states. [2020-10-14 21:02:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76396 to 66394. [2020-10-14 21:02:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66394 states. [2020-10-14 21:02:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66394 states to 66394 states and 74993 transitions. [2020-10-14 21:02:12,949 INFO L78 Accepts]: Start accepts. Automaton has 66394 states and 74993 transitions. Word has length 496 [2020-10-14 21:02:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:12,949 INFO L479 AbstractCegarLoop]: Abstraction has 66394 states and 74993 transitions. [2020-10-14 21:02:12,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:02:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 66394 states and 74993 transitions. [2020-10-14 21:02:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-14 21:02:12,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:12,966 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:12,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 21:02:12,967 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:12,967 INFO L82 PathProgramCache]: Analyzing trace with hash 963768414, now seen corresponding path program 1 times [2020-10-14 21:02:12,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:12,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385315077] [2020-10-14 21:02:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:13,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-14 21:02:18,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:02:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 21:02:18,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 21:02:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:02:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 487 [2020-10-14 21:02:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:02:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:02:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:02:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:02:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:02:18,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:02:18,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:02:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:02:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:02:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 21:02:18,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 21:02:18,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 21:02:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-14 21:02:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:19,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:19,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:02:19,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:02:19,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:19,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 21:02:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 205 proven. 328 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 21:02:19,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385315077] [2020-10-14 21:02:19,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:19,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:02:19,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701784836] [2020-10-14 21:02:19,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:02:19,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:19,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:02:19,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:02:19,268 INFO L87 Difference]: Start difference. First operand 66394 states and 74993 transitions. Second operand 10 states. [2020-10-14 21:02:27,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:27,400 INFO L93 Difference]: Finished difference Result 128515 states and 145690 transitions. [2020-10-14 21:02:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 21:02:27,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 531 [2020-10-14 21:02:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:27,529 INFO L225 Difference]: With dead ends: 128515 [2020-10-14 21:02:27,529 INFO L226 Difference]: Without dead ends: 67880 [2020-10-14 21:02:27,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 21:02:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67880 states. [2020-10-14 21:02:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67880 to 66582. [2020-10-14 21:02:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66582 states. [2020-10-14 21:02:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66582 states to 66582 states and 75193 transitions. [2020-10-14 21:02:28,386 INFO L78 Accepts]: Start accepts. Automaton has 66582 states and 75193 transitions. Word has length 531 [2020-10-14 21:02:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:28,387 INFO L479 AbstractCegarLoop]: Abstraction has 66582 states and 75193 transitions. [2020-10-14 21:02:28,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:02:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 66582 states and 75193 transitions. [2020-10-14 21:02:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-14 21:02:28,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:28,408 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:28,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 21:02:28,408 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1661053128, now seen corresponding path program 1 times [2020-10-14 21:02:28,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:28,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820034693] [2020-10-14 21:02:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking...