/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:32:02,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:32:02,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:32:02,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:32:02,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:32:02,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:32:02,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:32:02,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:32:02,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:32:02,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:32:02,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:32:02,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:32:02,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:32:02,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:32:02,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:32:02,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:32:02,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:32:02,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:32:02,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:32:02,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:32:02,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:32:02,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:32:02,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:32:02,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:32:02,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:32:02,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:32:02,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:32:02,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:32:02,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:32:02,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:32:02,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:32:02,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:32:02,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:32:02,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:32:02,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:32:02,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:32:02,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:32:02,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:32:02,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:32:02,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:32:02,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:32:02,388 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 03:32:02,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:32:02,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:32:02,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:32:02,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:32:02,435 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:32:02,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:32:02,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:32:02,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:32:02,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:32:02,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:32:02,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:32:02,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:32:02,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:32:02,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:32:02,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:32:02,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:32:02,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:32:02,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:32:02,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:32:02,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:32:02,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:32:02,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:32:02,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:32:02,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:32:02,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:32:02,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:32:02,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:32:02,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:32:02,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:32:02,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:32:02,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:32:02,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:32:02,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:32:02,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:32:02,767 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:32:02,768 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39.c [2020-10-14 03:32:02,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0db76bf6/ba5555b9d2454da1968e44d9b73f4e39/FLAG3c9c53d3f [2020-10-14 03:32:03,499 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:32:03,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label39.c [2020-10-14 03:32:03,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0db76bf6/ba5555b9d2454da1968e44d9b73f4e39/FLAG3c9c53d3f [2020-10-14 03:32:03,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0db76bf6/ba5555b9d2454da1968e44d9b73f4e39 [2020-10-14 03:32:03,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:32:03,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:32:03,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:32:03,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:32:03,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:32:03,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:32:03" (1/1) ... [2020-10-14 03:32:03,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589fe6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:03, skipping insertion in model container [2020-10-14 03:32:03,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:32:03" (1/1) ... [2020-10-14 03:32:03,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:32:03,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:32:04,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:32:04,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:32:05,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:32:05,241 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:32:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05 WrapperNode [2020-10-14 03:32:05,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:32:05,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:32:05,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:32:05,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:32:05,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (1/1) ... [2020-10-14 03:32:05,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:32:05,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:32:05,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:32:05,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:32:05,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (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 03:32:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:32:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:32:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:32:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:32:05,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:32:05,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:32:05,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:32:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:32:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:32:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:32:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:32:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:32:05,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:32:11,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:32:11,512 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:32:11,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:32:11 BoogieIcfgContainer [2020-10-14 03:32:11,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:32:11,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:32:11,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:32:11,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:32:11,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:32:03" (1/3) ... [2020-10-14 03:32:11,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a4b5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:32:11, skipping insertion in model container [2020-10-14 03:32:11,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:05" (2/3) ... [2020-10-14 03:32:11,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a4b5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:32:11, skipping insertion in model container [2020-10-14 03:32:11,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:32:11" (3/3) ... [2020-10-14 03:32:11,531 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label39.c [2020-10-14 03:32:11,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:32:11,556 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:32:11,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:32:11,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:32:11,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:32:11,606 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:32:11,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:32:11,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:32:11,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:32:11,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:32:11,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:32:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:32:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 03:32:11,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:11,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:11,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:11,653 INFO L82 PathProgramCache]: Analyzing trace with hash 512802637, now seen corresponding path program 1 times [2020-10-14 03:32:11,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:11,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461701475] [2020-10-14 03:32:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:12,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:12,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 03:32:12,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 03:32:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:12,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:32:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:32:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 03:32:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:32:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:12,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 03:32:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:12,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:32:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:12,287 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 03:32:12,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461701475] [2020-10-14 03:32:12,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:32:12,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:32:12,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724937680] [2020-10-14 03:32:12,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:32:12,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:32:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:32:12,320 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:32:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:20,375 INFO L93 Difference]: Finished difference Result 1245 states and 2225 transitions. [2020-10-14 03:32:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:20,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 03:32:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:20,419 INFO L225 Difference]: With dead ends: 1245 [2020-10-14 03:32:20,419 INFO L226 Difference]: Without dead ends: 729 [2020-10-14 03:32:20,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-14 03:32:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 712. [2020-10-14 03:32:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 03:32:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1206 transitions. [2020-10-14 03:32:20,624 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1206 transitions. Word has length 17 [2020-10-14 03:32:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:20,625 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1206 transitions. [2020-10-14 03:32:20,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:32:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1206 transitions. [2020-10-14 03:32:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 03:32:20,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:20,631 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:32:20,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:32:20,632 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:20,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1473821494, now seen corresponding path program 1 times [2020-10-14 03:32:20,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:20,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441685306] [2020-10-14 03:32:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:32:21,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-14 03:32:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:21,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:32:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 03:32:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:22,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:32:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:32:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:22,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:32:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:22,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441685306] [2020-10-14 03:32:22,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:22,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:22,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031859911] [2020-10-14 03:32:22,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:22,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:22,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:22,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:22,082 INFO L87 Difference]: Start difference. First operand 712 states and 1206 transitions. Second operand 5 states. [2020-10-14 03:32:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:32,025 INFO L93 Difference]: Finished difference Result 2063 states and 3550 transitions. [2020-10-14 03:32:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:32,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-14 03:32:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:32,040 INFO L225 Difference]: With dead ends: 2063 [2020-10-14 03:32:32,041 INFO L226 Difference]: Without dead ends: 1357 [2020-10-14 03:32:32,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-10-14 03:32:32,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1352. [2020-10-14 03:32:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-10-14 03:32:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2091 transitions. [2020-10-14 03:32:32,131 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2091 transitions. Word has length 86 [2020-10-14 03:32:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:32,133 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 2091 transitions. [2020-10-14 03:32:32,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:32,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2091 transitions. [2020-10-14 03:32:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 03:32:32,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:32,148 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:32:32,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:32:32,149 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash 567620316, now seen corresponding path program 1 times [2020-10-14 03:32:32,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:32,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109777862] [2020-10-14 03:32:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:32:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:32:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-14 03:32:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:33,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:32:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 03:32:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:32:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:33,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:33,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:32:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:32:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:33,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:32:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:33,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109777862] [2020-10-14 03:32:33,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:33,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:33,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569771331] [2020-10-14 03:32:33,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:33,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:33,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:33,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:33,680 INFO L87 Difference]: Start difference. First operand 1352 states and 2091 transitions. Second operand 5 states. [2020-10-14 03:32:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:41,868 INFO L93 Difference]: Finished difference Result 3321 states and 5310 transitions. [2020-10-14 03:32:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:41,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 03:32:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:41,886 INFO L225 Difference]: With dead ends: 3321 [2020-10-14 03:32:41,886 INFO L226 Difference]: Without dead ends: 1975 [2020-10-14 03:32:41,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-10-14 03:32:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1971. [2020-10-14 03:32:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-10-14 03:32:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2841 transitions. [2020-10-14 03:32:41,953 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2841 transitions. Word has length 107 [2020-10-14 03:32:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:41,954 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2841 transitions. [2020-10-14 03:32:41,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2841 transitions. [2020-10-14 03:32:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 03:32:41,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:41,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:32:41,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:32:41,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash 865232260, now seen corresponding path program 1 times [2020-10-14 03:32:41,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:41,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607800788] [2020-10-14 03:32:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:42,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:42,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 03:32:42,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 03:32:42,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:42,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:32:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:32:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:32:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 03:32:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:42,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:42,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:42,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:32:42,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:42,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:32:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:42,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:42,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:32:42,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 03:32:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:42,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:32:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:32:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:42,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607800788] [2020-10-14 03:32:42,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:32:42,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:32:42,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115984746] [2020-10-14 03:32:42,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:32:42,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:42,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:32:42,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:32:42,971 INFO L87 Difference]: Start difference. First operand 1971 states and 2841 transitions. Second operand 7 states. [2020-10-14 03:32:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:52,660 INFO L93 Difference]: Finished difference Result 4346 states and 6479 transitions. [2020-10-14 03:32:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:32:52,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 03:32:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:52,683 INFO L225 Difference]: With dead ends: 4346 [2020-10-14 03:32:52,683 INFO L226 Difference]: Without dead ends: 2381 [2020-10-14 03:32:52,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:32:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-10-14 03:32:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2304. [2020-10-14 03:32:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-10-14 03:32:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3237 transitions. [2020-10-14 03:32:52,767 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3237 transitions. Word has length 108 [2020-10-14 03:32:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:52,767 INFO L479 AbstractCegarLoop]: Abstraction has 2304 states and 3237 transitions. [2020-10-14 03:32:52,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:32:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3237 transitions. [2020-10-14 03:32:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 03:32:52,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:52,769 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:32:52,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:32:52,769 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:52,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:52,770 INFO L82 PathProgramCache]: Analyzing trace with hash 615262659, now seen corresponding path program 1 times [2020-10-14 03:32:52,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:52,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694396236] [2020-10-14 03:32:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:32:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 03:32:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:32:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:32:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 03:32:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:32:53,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:53,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:32:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:32:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 03:32:53,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:53,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:32:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:32:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:53,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694396236] [2020-10-14 03:32:53,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:32:53,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:32:53,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028463042] [2020-10-14 03:32:53,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:32:53,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:53,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:32:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:32:53,501 INFO L87 Difference]: Start difference. First operand 2304 states and 3237 transitions. Second operand 7 states. [2020-10-14 03:33:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:01,312 INFO L93 Difference]: Finished difference Result 5930 states and 8827 transitions. [2020-10-14 03:33:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:33:01,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-14 03:33:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:01,335 INFO L225 Difference]: With dead ends: 5930 [2020-10-14 03:33:01,335 INFO L226 Difference]: Without dead ends: 3939 [2020-10-14 03:33:01,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 03:33:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2020-10-14 03:33:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3591. [2020-10-14 03:33:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2020-10-14 03:33:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 4783 transitions. [2020-10-14 03:33:01,442 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 4783 transitions. Word has length 120 [2020-10-14 03:33:01,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:01,442 INFO L479 AbstractCegarLoop]: Abstraction has 3591 states and 4783 transitions. [2020-10-14 03:33:01,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 4783 transitions. [2020-10-14 03:33:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 03:33:01,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:01,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:01,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:33:01,447 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:01,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1227015719, now seen corresponding path program 1 times [2020-10-14 03:33:01,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:01,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115253731] [2020-10-14 03:33:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:02,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:02,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 03:33:02,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-14 03:33:02,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:02,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 03:33:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:33:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 03:33:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:02,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:02,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:02,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:33:02,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:02,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:03,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:33:03,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:03,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-14 03:33:03,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:03,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:33:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 03:33:03,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:33:03,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115253731] [2020-10-14 03:33:03,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:03,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:03,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529480400] [2020-10-14 03:33:03,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:33:03,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:33:03,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:33:03,652 INFO L87 Difference]: Start difference. First operand 3591 states and 4783 transitions. Second operand 8 states. [2020-10-14 03:33:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:16,277 INFO L93 Difference]: Finished difference Result 11358 states and 15747 transitions. [2020-10-14 03:33:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:33:16,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 254 [2020-10-14 03:33:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:16,321 INFO L225 Difference]: With dead ends: 11358 [2020-10-14 03:33:16,321 INFO L226 Difference]: Without dead ends: 7773 [2020-10-14 03:33:16,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:33:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7773 states. [2020-10-14 03:33:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 7064. [2020-10-14 03:33:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7064 states. [2020-10-14 03:33:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7064 states to 7064 states and 9398 transitions. [2020-10-14 03:33:16,587 INFO L78 Accepts]: Start accepts. Automaton has 7064 states and 9398 transitions. Word has length 254 [2020-10-14 03:33:16,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:16,588 INFO L479 AbstractCegarLoop]: Abstraction has 7064 states and 9398 transitions. [2020-10-14 03:33:16,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:33:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7064 states and 9398 transitions. [2020-10-14 03:33:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 03:33:16,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:16,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:16,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:33:16,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1876013436, now seen corresponding path program 1 times [2020-10-14 03:33:16,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:16,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107605604] [2020-10-14 03:33:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:16,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:19,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 03:33:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:33:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 03:33:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:21,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:33:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:33:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:21,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:33:21,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:21,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:21,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:33:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:33:21,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:21,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:33:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:33:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:22,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:22,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:33:22,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 03:33:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:22,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:33:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:22,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107605604] [2020-10-14 03:33:22,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:22,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:22,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501027044] [2020-10-14 03:33:22,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:22,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:22,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:22,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:22,568 INFO L87 Difference]: Start difference. First operand 7064 states and 9398 transitions. Second operand 7 states. [2020-10-14 03:33:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:35,669 INFO L93 Difference]: Finished difference Result 18254 states and 25273 transitions. [2020-10-14 03:33:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:33:35,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 03:33:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:35,710 INFO L225 Difference]: With dead ends: 18254 [2020-10-14 03:33:35,710 INFO L226 Difference]: Without dead ends: 9599 [2020-10-14 03:33:35,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 03:33:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2020-10-14 03:33:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 8619. [2020-10-14 03:33:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8619 states. [2020-10-14 03:33:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 10524 transitions. [2020-10-14 03:33:35,988 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 10524 transitions. Word has length 269 [2020-10-14 03:33:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:35,988 INFO L479 AbstractCegarLoop]: Abstraction has 8619 states and 10524 transitions. [2020-10-14 03:33:35,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 10524 transitions. [2020-10-14 03:33:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 03:33:35,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:35,995 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:35,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:33:35,995 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1549327553, now seen corresponding path program 1 times [2020-10-14 03:33:35,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:35,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557797577] [2020-10-14 03:33:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:39,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:39,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 03:33:39,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:33:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3031 [2020-10-14 03:33:39,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:39,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:33:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:33:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:39,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:39,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:33:39,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:39,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:39,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:39,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:33:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 03:33:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:39,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:33:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:39,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:33:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:33:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 03:33:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:39,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:33:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:40,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557797577] [2020-10-14 03:33:40,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:40,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:40,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014130713] [2020-10-14 03:33:40,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:40,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:40,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:40,102 INFO L87 Difference]: Start difference. First operand 8619 states and 10524 transitions. Second operand 7 states. [2020-10-14 03:33:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:52,333 INFO L93 Difference]: Finished difference Result 22902 states and 28620 transitions. [2020-10-14 03:33:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:33:52,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-14 03:33:52,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:52,403 INFO L225 Difference]: With dead ends: 22902 [2020-10-14 03:33:52,404 INFO L226 Difference]: Without dead ends: 14289 [2020-10-14 03:33:52,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14289 states. [2020-10-14 03:33:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14289 to 13008. [2020-10-14 03:33:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13008 states. [2020-10-14 03:33:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13008 states to 13008 states and 16330 transitions. [2020-10-14 03:33:52,867 INFO L78 Accepts]: Start accepts. Automaton has 13008 states and 16330 transitions. Word has length 308 [2020-10-14 03:33:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:52,868 INFO L479 AbstractCegarLoop]: Abstraction has 13008 states and 16330 transitions. [2020-10-14 03:33:52,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13008 states and 16330 transitions. [2020-10-14 03:33:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-14 03:33:52,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:52,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:52,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:33:52,876 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:52,877 INFO L82 PathProgramCache]: Analyzing trace with hash 296791424, now seen corresponding path program 1 times [2020-10-14 03:33:52,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:52,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261906391] [2020-10-14 03:33:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:54,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:54,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 03:33:54,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:33:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1671 [2020-10-14 03:33:54,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:54,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:33:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:33:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 03:33:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:54,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:54,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:33:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:54,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:33:54,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:55,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:55,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:33:55,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 03:33:55,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:55,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:33:55,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:33:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:55,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:33:55,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:33:55,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:55,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 03:33:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 20 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 03:33:55,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261906391] [2020-10-14 03:33:55,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:55,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:33:55,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398388827] [2020-10-14 03:33:55,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:33:55,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:55,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:33:55,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:33:55,974 INFO L87 Difference]: Start difference. First operand 13008 states and 16330 transitions. Second operand 8 states. [2020-10-14 03:34:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:08,884 INFO L93 Difference]: Finished difference Result 26368 states and 33190 transitions. [2020-10-14 03:34:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:34:08,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 320 [2020-10-14 03:34:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:08,942 INFO L225 Difference]: With dead ends: 26368 [2020-10-14 03:34:08,942 INFO L226 Difference]: Without dead ends: 13366 [2020-10-14 03:34:08,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:34:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13366 states. [2020-10-14 03:34:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13366 to 13327. [2020-10-14 03:34:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13327 states. [2020-10-14 03:34:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13327 states to 13327 states and 16697 transitions. [2020-10-14 03:34:09,353 INFO L78 Accepts]: Start accepts. Automaton has 13327 states and 16697 transitions. Word has length 320 [2020-10-14 03:34:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:09,354 INFO L479 AbstractCegarLoop]: Abstraction has 13327 states and 16697 transitions. [2020-10-14 03:34:09,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:34:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13327 states and 16697 transitions. [2020-10-14 03:34:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-14 03:34:09,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:09,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:09,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:34:09,365 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1464149641, now seen corresponding path program 1 times [2020-10-14 03:34:09,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:09,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824013243] [2020-10-14 03:34:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 03:34:11,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:34:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1881 [2020-10-14 03:34:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:34:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:34:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:11,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:34:11,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:11,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:34:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 03:34:11,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:34:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:34:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:12,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:12,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:34:12,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 03:34:12,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:12,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:34:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:34:12,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824013243] [2020-10-14 03:34:12,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:12,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:12,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599405285] [2020-10-14 03:34:12,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:12,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:12,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:12,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:12,479 INFO L87 Difference]: Start difference. First operand 13327 states and 16697 transitions. Second operand 7 states. [2020-10-14 03:34:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:23,110 INFO L93 Difference]: Finished difference Result 31685 states and 40459 transitions. [2020-10-14 03:34:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:34:23,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-14 03:34:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:23,179 INFO L225 Difference]: With dead ends: 31685 [2020-10-14 03:34:23,180 INFO L226 Difference]: Without dead ends: 18671 [2020-10-14 03:34:23,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 03:34:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18671 states. [2020-10-14 03:34:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18671 to 16789. [2020-10-14 03:34:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16789 states. [2020-10-14 03:34:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16789 states to 16789 states and 20544 transitions. [2020-10-14 03:34:23,859 INFO L78 Accepts]: Start accepts. Automaton has 16789 states and 20544 transitions. Word has length 394 [2020-10-14 03:34:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:23,861 INFO L479 AbstractCegarLoop]: Abstraction has 16789 states and 20544 transitions. [2020-10-14 03:34:23,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16789 states and 20544 transitions. [2020-10-14 03:34:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-14 03:34:23,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:23,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:23,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:34:23,871 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:23,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1702013945, now seen corresponding path program 1 times [2020-10-14 03:34:23,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:23,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855502168] [2020-10-14 03:34:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:26,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-14 03:34:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:34:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-14 03:34:26,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:26,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:34:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:34:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:26,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:26,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:34:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:34:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:27,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:34:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:27,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:27,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:34:27,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 03:34:27,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:27,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:34:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:34:27,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855502168] [2020-10-14 03:34:27,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:27,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:34:28,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527783060] [2020-10-14 03:34:28,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:34:28,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:28,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:34:28,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:34:28,001 INFO L87 Difference]: Start difference. First operand 16789 states and 20544 transitions. Second operand 8 states. [2020-10-14 03:34:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:42,832 INFO L93 Difference]: Finished difference Result 34210 states and 41803 transitions. [2020-10-14 03:34:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:34:42,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 402 [2020-10-14 03:34:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:42,887 INFO L225 Difference]: With dead ends: 34210 [2020-10-14 03:34:42,887 INFO L226 Difference]: Without dead ends: 17734 [2020-10-14 03:34:42,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17734 states. [2020-10-14 03:34:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17734 to 17415. [2020-10-14 03:34:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17415 states. [2020-10-14 03:34:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17415 states to 17415 states and 21197 transitions. [2020-10-14 03:34:43,554 INFO L78 Accepts]: Start accepts. Automaton has 17415 states and 21197 transitions. Word has length 402 [2020-10-14 03:34:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:43,555 INFO L479 AbstractCegarLoop]: Abstraction has 17415 states and 21197 transitions. [2020-10-14 03:34:43,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:34:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 17415 states and 21197 transitions. [2020-10-14 03:34:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-14 03:34:43,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:43,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:43,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:34:43,565 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:43,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1417184923, now seen corresponding path program 1 times [2020-10-14 03:34:43,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:43,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658051578] [2020-10-14 03:34:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:45,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:45,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 03:34:45,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-14 03:34:45,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:45,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 03:34:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:34:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 456 [2020-10-14 03:34:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:34:45,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:34:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:45,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:45,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:45,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:34:45,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-14 03:34:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:45,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 03:34:45,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:34:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:46,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 03:34:46,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 03:34:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 147 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 03:34:46,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658051578] [2020-10-14 03:34:46,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:46,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:34:46,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18107356] [2020-10-14 03:34:46,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 03:34:46,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:46,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 03:34:46,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 03:34:46,551 INFO L87 Difference]: Start difference. First operand 17415 states and 21197 transitions. Second operand 9 states. [2020-10-14 03:35:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:02,516 INFO L93 Difference]: Finished difference Result 40123 states and 52085 transitions. [2020-10-14 03:35:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 03:35:02,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 450 [2020-10-14 03:35:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:02,614 INFO L225 Difference]: With dead ends: 40123 [2020-10-14 03:35:02,614 INFO L226 Difference]: Without dead ends: 22038 [2020-10-14 03:35:02,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-14 03:35:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22038 states. [2020-10-14 03:35:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22038 to 19917. [2020-10-14 03:35:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19917 states. [2020-10-14 03:35:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19917 states to 19917 states and 23809 transitions. [2020-10-14 03:35:03,132 INFO L78 Accepts]: Start accepts. Automaton has 19917 states and 23809 transitions. Word has length 450 [2020-10-14 03:35:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:03,133 INFO L479 AbstractCegarLoop]: Abstraction has 19917 states and 23809 transitions. [2020-10-14 03:35:03,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 03:35:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19917 states and 23809 transitions. [2020-10-14 03:35:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-14 03:35:03,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:03,145 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:03,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:35:03,145 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash -558174243, now seen corresponding path program 1 times [2020-10-14 03:35:03,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:03,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694014108] [2020-10-14 03:35:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:05,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2365 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:35:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:35:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:05,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:05,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:35:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:05,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:05,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:05,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:05,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:05,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:35:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:35:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 03:35:06,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:06,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:35:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:35:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:06,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:35:06,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:35:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:06,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:35:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:35:06,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694014108] [2020-10-14 03:35:06,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:06,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:06,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993041210] [2020-10-14 03:35:06,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:06,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:06,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:06,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:06,572 INFO L87 Difference]: Start difference. First operand 19917 states and 23809 transitions. Second operand 7 states. [2020-10-14 03:35:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:19,906 INFO L93 Difference]: Finished difference Result 45165 states and 54615 transitions. [2020-10-14 03:35:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:19,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 515 [2020-10-14 03:35:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:19,986 INFO L225 Difference]: With dead ends: 45165 [2020-10-14 03:35:19,986 INFO L226 Difference]: Without dead ends: 24943 [2020-10-14 03:35:20,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24943 states. [2020-10-14 03:35:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24943 to 21810. [2020-10-14 03:35:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21810 states. [2020-10-14 03:35:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21810 states to 21810 states and 26159 transitions. [2020-10-14 03:35:20,784 INFO L78 Accepts]: Start accepts. Automaton has 21810 states and 26159 transitions. Word has length 515 [2020-10-14 03:35:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:20,786 INFO L479 AbstractCegarLoop]: Abstraction has 21810 states and 26159 transitions. [2020-10-14 03:35:20,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 21810 states and 26159 transitions. [2020-10-14 03:35:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-14 03:35:20,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:20,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:20,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:35:20,794 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:20,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash -661448610, now seen corresponding path program 1 times [2020-10-14 03:35:20,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:20,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159418942] [2020-10-14 03:35:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:22,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-14 03:35:22,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:35:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-14 03:35:22,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:22,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:35:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 03:35:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:35:22,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:22,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:22,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:22,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:35:22,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:35:22,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:22,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:22,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:35:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:23,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:23,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:35:23,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:35:23,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:23,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:35:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:35:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:23,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:23,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 03:35:23,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 03:35:23,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:23,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 03:35:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:35:24,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159418942] [2020-10-14 03:35:24,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:24,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:35:24,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418503990] [2020-10-14 03:35:24,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:35:24,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:24,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:35:24,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:35:24,126 INFO L87 Difference]: Start difference. First operand 21810 states and 26159 transitions. Second operand 8 states. [2020-10-14 03:35:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:36,719 INFO L93 Difference]: Finished difference Result 54463 states and 67414 transitions. [2020-10-14 03:35:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:35:36,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 520 [2020-10-14 03:35:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:36,824 INFO L225 Difference]: With dead ends: 54463 [2020-10-14 03:35:36,824 INFO L226 Difference]: Without dead ends: 32966 [2020-10-14 03:35:36,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:35:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32966 states. [2020-10-14 03:35:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32966 to 32029. [2020-10-14 03:35:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32029 states. [2020-10-14 03:35:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32029 states to 32029 states and 39177 transitions. [2020-10-14 03:35:37,697 INFO L78 Accepts]: Start accepts. Automaton has 32029 states and 39177 transitions. Word has length 520 [2020-10-14 03:35:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:37,698 INFO L479 AbstractCegarLoop]: Abstraction has 32029 states and 39177 transitions. [2020-10-14 03:35:37,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:35:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 32029 states and 39177 transitions. [2020-10-14 03:35:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-14 03:35:37,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:37,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:37,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:35:37,711 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:37,712 INFO L82 PathProgramCache]: Analyzing trace with hash -485728065, now seen corresponding path program 1 times [2020-10-14 03:35:37,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:37,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545280405] [2020-10-14 03:35:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-14 03:35:40,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:35:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2429 [2020-10-14 03:35:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:40,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:35:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 03:35:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:35:40,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:40,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:40,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:40,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:35:40,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:35:40,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:40,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:35:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:35:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:35:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:40,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:40,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 03:35:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:35:41,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545280405] [2020-10-14 03:35:41,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:41,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:41,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772873378] [2020-10-14 03:35:41,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:41,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:41,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:41,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:41,158 INFO L87 Difference]: Start difference. First operand 32029 states and 39177 transitions. Second operand 7 states. [2020-10-14 03:35:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:50,691 INFO L93 Difference]: Finished difference Result 63133 states and 77260 transitions. [2020-10-14 03:35:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:35:50,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-14 03:35:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:50,783 INFO L225 Difference]: With dead ends: 63133 [2020-10-14 03:35:50,783 INFO L226 Difference]: Without dead ends: 31417 [2020-10-14 03:35:50,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31417 states. [2020-10-14 03:35:51,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31417 to 30775. [2020-10-14 03:35:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30775 states. [2020-10-14 03:35:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30775 states to 30775 states and 35271 transitions. [2020-10-14 03:35:51,527 INFO L78 Accepts]: Start accepts. Automaton has 30775 states and 35271 transitions. Word has length 541 [2020-10-14 03:35:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:51,528 INFO L479 AbstractCegarLoop]: Abstraction has 30775 states and 35271 transitions. [2020-10-14 03:35:51,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 30775 states and 35271 transitions. [2020-10-14 03:35:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-14 03:35:51,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:51,542 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:51,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:35:51,542 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1057843718, now seen corresponding path program 1 times [2020-10-14 03:35:51,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:51,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493551756] [2020-10-14 03:35:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking...