/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/Problem03_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:50:31,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:50:31,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:50:31,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:50:31,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:50:31,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:50:31,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:50:31,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:50:31,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:50:31,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:50:31,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:50:31,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:50:31,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:50:31,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:50:31,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:50:31,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:50:31,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:50:31,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:50:31,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:50:31,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:50:31,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:50:31,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:50:31,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:50:31,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:50:31,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:50:31,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:50:31,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:50:31,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:50:31,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:50:31,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:50:31,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:50:31,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:50:31,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:50:31,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:50:31,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:50:31,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:50:31,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:50:31,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:50:31,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:50:31,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:50:31,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:50:31,553 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 00:50:31,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:50:31,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:50:31,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:50:31,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:50:31,579 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:50:31,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:50:31,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:50:31,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:50:31,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:50:31,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:50:31,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:50:31,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:50:31,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:50:31,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:50:31,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:50:31,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:50:31,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:50:31,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:50:31,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:50:31,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:50:31,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:50:31,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:50:31,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:50:31,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:50:31,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:50:31,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:50:31,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:50:31,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:50:31,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:50:31,583 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 00:50:31,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:50:31,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:50:31,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:50:31,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:50:31,922 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:50:31,923 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label25.c [2020-10-14 00:50:32,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8858acc90/b254d06cef354bed89c686d15796f9a3/FLAG5f4dbf988 [2020-10-14 00:50:32,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:50:32,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label25.c [2020-10-14 00:50:32,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8858acc90/b254d06cef354bed89c686d15796f9a3/FLAG5f4dbf988 [2020-10-14 00:50:32,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8858acc90/b254d06cef354bed89c686d15796f9a3 [2020-10-14 00:50:32,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:50:32,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:50:32,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:50:32,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:50:32,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:50:32,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:50:32" (1/1) ... [2020-10-14 00:50:32,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78ef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:32, skipping insertion in model container [2020-10-14 00:50:32,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:50:32" (1/1) ... [2020-10-14 00:50:32,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:50:33,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:50:33,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:50:33,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:50:34,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:50:34,284 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:50:34,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34 WrapperNode [2020-10-14 00:50:34,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:50:34,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:50:34,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:50:34,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:50:34,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (1/1) ... [2020-10-14 00:50:34,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:50:34,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:50:34,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:50:34,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:50:34,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (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 00:50:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:50:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:50:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:50:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:50:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:50:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:50:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:50:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:50:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:50:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:50:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:50:36,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:50:36,493 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:50:36,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:50:36 BoogieIcfgContainer [2020-10-14 00:50:36,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:50:36,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:50:36,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:50:36,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:50:36,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:50:32" (1/3) ... [2020-10-14 00:50:36,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fed4b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:50:36, skipping insertion in model container [2020-10-14 00:50:36,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:34" (2/3) ... [2020-10-14 00:50:36,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fed4b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:50:36, skipping insertion in model container [2020-10-14 00:50:36,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:50:36" (3/3) ... [2020-10-14 00:50:36,509 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label25.c [2020-10-14 00:50:36,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:50:36,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:50:36,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:50:36,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:50:36,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:50:36,576 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:50:36,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:50:36,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:50:36,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:50:36,577 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:50:36,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:50:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:50:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 00:50:36,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:36,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:50:36,625 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:36,633 INFO L82 PathProgramCache]: Analyzing trace with hash 983729877, now seen corresponding path program 1 times [2020-10-14 00:50:36,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:36,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974130077] [2020-10-14 00:50:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:40,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:40,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 00:50:40,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3798 [2020-10-14 00:50:40,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:40,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:50:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 00:50:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:50:41,291 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:41,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:50:41,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:41,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:50:41,479 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 00:50:41,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974130077] [2020-10-14 00:50:41,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:50:41,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:50:41,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659658534] [2020-10-14 00:50:41,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:50:41,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:50:41,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:50:41,507 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:50:41,714 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:50:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:44,516 INFO L93 Difference]: Finished difference Result 864 states and 1518 transitions. [2020-10-14 00:50:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:44,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-10-14 00:50:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:44,541 INFO L225 Difference]: With dead ends: 864 [2020-10-14 00:50:44,542 INFO L226 Difference]: Without dead ends: 476 [2020-10-14 00:50:44,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:44,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-14 00:50:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 467. [2020-10-14 00:50:44,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-14 00:50:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 721 transitions. [2020-10-14 00:50:44,654 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 721 transitions. Word has length 186 [2020-10-14 00:50:44,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:44,655 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 721 transitions. [2020-10-14 00:50:44,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:50:44,656 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 721 transitions. [2020-10-14 00:50:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 00:50:44,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:44,663 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:50:44,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:50:44,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:44,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:44,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1559316050, now seen corresponding path program 1 times [2020-10-14 00:50:44,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:44,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713687383] [2020-10-14 00:50:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:47,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 00:50:47,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:50:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2892 [2020-10-14 00:50:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:47,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:50:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 00:50:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:47,984 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:47,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:50:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:47,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:48,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:48,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:50:48,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:50:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:50:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:48,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713687383] [2020-10-14 00:50:48,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:48,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:50:48,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102081126] [2020-10-14 00:50:48,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:50:48,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:48,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:50:48,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:48,207 INFO L87 Difference]: Start difference. First operand 467 states and 721 transitions. Second operand 5 states. [2020-10-14 00:50:48,460 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:51,044 INFO L93 Difference]: Finished difference Result 1352 states and 2107 transitions. [2020-10-14 00:50:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:51,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-14 00:50:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:51,050 INFO L225 Difference]: With dead ends: 1352 [2020-10-14 00:50:51,051 INFO L226 Difference]: Without dead ends: 470 [2020-10-14 00:50:51,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:50:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-14 00:50:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 466. [2020-10-14 00:50:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-14 00:50:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 719 transitions. [2020-10-14 00:50:51,083 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 719 transitions. Word has length 196 [2020-10-14 00:50:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:51,084 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 719 transitions. [2020-10-14 00:50:51,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:50:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 719 transitions. [2020-10-14 00:50:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 00:50:51,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:51,088 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:50:51,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:50:51,088 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:51,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1128242723, now seen corresponding path program 1 times [2020-10-14 00:50:51,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:51,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481181055] [2020-10-14 00:50:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:54,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 00:50:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:50:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3284 [2020-10-14 00:50:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:54,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:50:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 00:50:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:54,696 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:54,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:50:54,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:54,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:54,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:54,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:50:54,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:50:54,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:54,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:50:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:54,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481181055] [2020-10-14 00:50:54,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:54,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:50:54,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174878552] [2020-10-14 00:50:54,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:50:54,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:54,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:50:54,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:54,995 INFO L87 Difference]: Start difference. First operand 466 states and 719 transitions. Second operand 5 states. [2020-10-14 00:50:55,194 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:57,754 INFO L93 Difference]: Finished difference Result 1370 states and 2146 transitions. [2020-10-14 00:50:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:57,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-14 00:50:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:57,763 INFO L225 Difference]: With dead ends: 1370 [2020-10-14 00:50:57,763 INFO L226 Difference]: Without dead ends: 910 [2020-10-14 00:50:57,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:50:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-14 00:50:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 890. [2020-10-14 00:50:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-10-14 00:50:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1357 transitions. [2020-10-14 00:50:57,827 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1357 transitions. Word has length 200 [2020-10-14 00:50:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:57,829 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1357 transitions. [2020-10-14 00:50:57,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:50:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1357 transitions. [2020-10-14 00:50:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 00:50:57,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:57,835 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:50:57,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:50:57,835 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:57,836 INFO L82 PathProgramCache]: Analyzing trace with hash 413695842, now seen corresponding path program 1 times [2020-10-14 00:50:57,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:57,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060265791] [2020-10-14 00:50:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:00,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:00,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 00:51:00,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:51:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-14 00:51:00,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:00,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:51:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 00:51:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:00,302 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:00,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:00,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:51:00,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:00,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:51:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:51:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:00,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:51:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:51:00,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060265791] [2020-10-14 00:51:00,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:00,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:51:00,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019589968] [2020-10-14 00:51:00,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:51:00,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:51:00,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:51:00,601 INFO L87 Difference]: Start difference. First operand 890 states and 1357 transitions. Second operand 5 states. [2020-10-14 00:51:00,731 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:51:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:03,109 INFO L93 Difference]: Finished difference Result 2632 states and 4090 transitions. [2020-10-14 00:51:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:51:03,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-14 00:51:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:03,122 INFO L225 Difference]: With dead ends: 2632 [2020-10-14 00:51:03,122 INFO L226 Difference]: Without dead ends: 1748 [2020-10-14 00:51:03,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:51:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-14 00:51:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1726. [2020-10-14 00:51:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2020-10-14 00:51:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2623 transitions. [2020-10-14 00:51:03,218 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2623 transitions. Word has length 203 [2020-10-14 00:51:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:03,219 INFO L479 AbstractCegarLoop]: Abstraction has 1726 states and 2623 transitions. [2020-10-14 00:51:03,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:51:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2623 transitions. [2020-10-14 00:51:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 00:51:03,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:03,227 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:51:03,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:51:03,228 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:03,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1885630442, now seen corresponding path program 1 times [2020-10-14 00:51:03,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:03,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835250094] [2020-10-14 00:51:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 00:51:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:51:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-14 00:51:05,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:05,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:51:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 00:51:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:05,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:05,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:05,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:51:05,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:05,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:05,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:51:05,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:05,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:51:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 00:51:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:05,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:51:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:51:06,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835250094] [2020-10-14 00:51:06,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:06,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:51:06,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976858220] [2020-10-14 00:51:06,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:51:06,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:51:06,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:51:06,087 INFO L87 Difference]: Start difference. First operand 1726 states and 2623 transitions. Second operand 5 states. [2020-10-14 00:51:06,213 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:08,459 INFO L93 Difference]: Finished difference Result 5123 states and 7946 transitions. [2020-10-14 00:51:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:51:08,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-14 00:51:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:08,483 INFO L225 Difference]: With dead ends: 5123 [2020-10-14 00:51:08,483 INFO L226 Difference]: Without dead ends: 3403 [2020-10-14 00:51:08,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:51:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-10-14 00:51:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3399. [2020-10-14 00:51:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3399 states. [2020-10-14 00:51:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 4638 transitions. [2020-10-14 00:51:08,622 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 4638 transitions. Word has length 209 [2020-10-14 00:51:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:08,623 INFO L479 AbstractCegarLoop]: Abstraction has 3399 states and 4638 transitions. [2020-10-14 00:51:08,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:51:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 4638 transitions. [2020-10-14 00:51:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 00:51:08,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:08,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:51:08,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:51:08,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:08,637 INFO L82 PathProgramCache]: Analyzing trace with hash 426049584, now seen corresponding path program 1 times [2020-10-14 00:51:08,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:08,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373058128] [2020-10-14 00:51:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:13,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:13,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 00:51:13,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:51:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:51:13,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:13,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:51:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 00:51:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:13,990 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:51:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:14,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:14,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:14,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:51:14,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:51:14,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:14,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:51:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:14,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:14,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:51:14,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 00:51:14,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:14,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:51:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:51:14,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373058128] [2020-10-14 00:51:14,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:14,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:51:14,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874016536] [2020-10-14 00:51:14,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:51:14,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:14,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:51:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:51:14,409 INFO L87 Difference]: Start difference. First operand 3399 states and 4638 transitions. Second operand 5 states. [2020-10-14 00:51:14,684 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:17,102 INFO L93 Difference]: Finished difference Result 9942 states and 13894 transitions. [2020-10-14 00:51:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:51:17,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-14 00:51:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:17,135 INFO L225 Difference]: With dead ends: 9942 [2020-10-14 00:51:17,135 INFO L226 Difference]: Without dead ends: 6549 [2020-10-14 00:51:17,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:51:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6549 states. [2020-10-14 00:51:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6549 to 6544. [2020-10-14 00:51:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6544 states. [2020-10-14 00:51:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 8682 transitions. [2020-10-14 00:51:17,338 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 8682 transitions. Word has length 231 [2020-10-14 00:51:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:17,339 INFO L479 AbstractCegarLoop]: Abstraction has 6544 states and 8682 transitions. [2020-10-14 00:51:17,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:51:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 8682 transitions. [2020-10-14 00:51:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 00:51:17,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:17,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:17,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:51:17,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:17,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:17,361 INFO L82 PathProgramCache]: Analyzing trace with hash -972849610, now seen corresponding path program 1 times [2020-10-14 00:51:17,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:17,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478192746] [2020-10-14 00:51:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 00:51:22,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:51:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:51:22,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 00:51:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 00:51:22,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:22,678 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:51:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:51:22,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:51:22,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:51:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:51:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:51:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:51:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:51:22,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:51:22,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:51:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 00:51:23,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478192746] [2020-10-14 00:51:23,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:23,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:51:23,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023223569] [2020-10-14 00:51:23,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:51:23,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:23,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:51:23,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:51:23,027 INFO L87 Difference]: Start difference. First operand 6544 states and 8682 transitions. Second operand 5 states. [2020-10-14 00:51:23,370 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:25,748 INFO L93 Difference]: Finished difference Result 18528 states and 25143 transitions. [2020-10-14 00:51:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:51:25,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-14 00:51:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:25,808 INFO L225 Difference]: With dead ends: 18528 [2020-10-14 00:51:25,808 INFO L226 Difference]: Without dead ends: 11990 [2020-10-14 00:51:25,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:51:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2020-10-14 00:51:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 11983. [2020-10-14 00:51:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11983 states. [2020-10-14 00:51:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11983 states to 11983 states and 15660 transitions. [2020-10-14 00:51:26,243 INFO L78 Accepts]: Start accepts. Automaton has 11983 states and 15660 transitions. Word has length 258 [2020-10-14 00:51:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:26,244 INFO L479 AbstractCegarLoop]: Abstraction has 11983 states and 15660 transitions. [2020-10-14 00:51:26,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:51:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 11983 states and 15660 transitions. [2020-10-14 00:51:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 00:51:26,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:26,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:26,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:51:26,292 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:26,292 INFO L82 PathProgramCache]: Analyzing trace with hash -758052036, now seen corresponding path program 1 times [2020-10-14 00:51:26,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:26,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664576602] [2020-10-14 00:51:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:31,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 00:51:31,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:51:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:51:31,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:31,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:51:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:51:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:31,498 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:31,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:31,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:31,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:51:31,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:31,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:31,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:31,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:31,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:31,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:31,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:51:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:31,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:51:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:51:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:51:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 00:51:31,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664576602] [2020-10-14 00:51:31,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:31,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:31,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302580601] [2020-10-14 00:51:31,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:31,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:31,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:31,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:31,872 INFO L87 Difference]: Start difference. First operand 11983 states and 15660 transitions. Second operand 7 states. [2020-10-14 00:51:32,157 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:32,592 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:35,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:35,075 INFO L93 Difference]: Finished difference Result 29167 states and 40140 transitions. [2020-10-14 00:51:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:35,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-14 00:51:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:35,140 INFO L225 Difference]: With dead ends: 29167 [2020-10-14 00:51:35,141 INFO L226 Difference]: Without dead ends: 17190 [2020-10-14 00:51:35,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17190 states. [2020-10-14 00:51:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17190 to 17120. [2020-10-14 00:51:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17120 states. [2020-10-14 00:51:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 22708 transitions. [2020-10-14 00:51:35,709 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 22708 transitions. Word has length 283 [2020-10-14 00:51:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:35,709 INFO L479 AbstractCegarLoop]: Abstraction has 17120 states and 22708 transitions. [2020-10-14 00:51:35,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:35,710 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 22708 transitions. [2020-10-14 00:51:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-14 00:51:35,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:35,782 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:35,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:51:35,783 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:35,784 INFO L82 PathProgramCache]: Analyzing trace with hash -928733780, now seen corresponding path program 1 times [2020-10-14 00:51:35,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:35,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448381949] [2020-10-14 00:51:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 00:51:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:51:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-14 00:51:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:40,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 00:51:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:51:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,135 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:41,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:51:41,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:41,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:51:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:51:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:51:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:51:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:51:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:51:41,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 00:51:41,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448381949] [2020-10-14 00:51:41,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:41,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:41,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352134765] [2020-10-14 00:51:41,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:41,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:41,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:41,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:41,757 INFO L87 Difference]: Start difference. First operand 17120 states and 22708 transitions. Second operand 7 states. [2020-10-14 00:51:42,085 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:51:42,630 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:51:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:45,407 INFO L93 Difference]: Finished difference Result 40401 states and 59904 transitions. [2020-10-14 00:51:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:51:45,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-14 00:51:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:45,500 INFO L225 Difference]: With dead ends: 40401 [2020-10-14 00:51:45,500 INFO L226 Difference]: Without dead ends: 23287 [2020-10-14 00:51:45,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:51:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23287 states. [2020-10-14 00:51:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23287 to 22663. [2020-10-14 00:51:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22663 states. [2020-10-14 00:51:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22663 states to 22663 states and 29597 transitions. [2020-10-14 00:51:47,466 INFO L78 Accepts]: Start accepts. Automaton has 22663 states and 29597 transitions. Word has length 309 [2020-10-14 00:51:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:47,466 INFO L479 AbstractCegarLoop]: Abstraction has 22663 states and 29597 transitions. [2020-10-14 00:51:47,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 22663 states and 29597 transitions. [2020-10-14 00:51:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 00:51:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:47,527 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:47,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:51:47,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1488976675, now seen corresponding path program 1 times [2020-10-14 00:51:47,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:47,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044956999] [2020-10-14 00:51:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:52,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:52,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-14 00:51:52,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:51:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 00:51:52,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:52,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 00:51:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:51:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:52,846 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:51:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:51:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:52,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:51:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:51:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:51:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:52,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:51:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:53,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:53,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:51:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:51:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:53,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:53,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:51:53,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 00:51:53,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:53,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:51:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:51:53,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044956999] [2020-10-14 00:51:53,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:53,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:53,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086725207] [2020-10-14 00:51:53,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:53,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:53,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:53,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:53,365 INFO L87 Difference]: Start difference. First operand 22663 states and 29597 transitions. Second operand 7 states. [2020-10-14 00:51:53,676 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:54,781 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:51:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:57,734 INFO L93 Difference]: Finished difference Result 65751 states and 100003 transitions. [2020-10-14 00:51:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:51:57,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-14 00:51:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:57,997 INFO L225 Difference]: With dead ends: 65751 [2020-10-14 00:51:57,998 INFO L226 Difference]: Without dead ends: 43094 [2020-10-14 00:51:58,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:51:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43094 states. [2020-10-14 00:51:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43094 to 38386. [2020-10-14 00:51:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38386 states. [2020-10-14 00:51:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38386 states to 38386 states and 49495 transitions. [2020-10-14 00:51:59,545 INFO L78 Accepts]: Start accepts. Automaton has 38386 states and 49495 transitions. Word has length 323 [2020-10-14 00:51:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:59,546 INFO L479 AbstractCegarLoop]: Abstraction has 38386 states and 49495 transitions. [2020-10-14 00:51:59,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 38386 states and 49495 transitions. [2020-10-14 00:51:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 00:51:59,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:59,618 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 00:51:59,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:51:59,619 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1063725280, now seen corresponding path program 1 times [2020-10-14 00:51:59,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:59,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384755329] [2020-10-14 00:51:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:04,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 00:52:04,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:52:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:52:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:04,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 00:52:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:52:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:05,037 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:05,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:05,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:05,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:52:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:05,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:05,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:05,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:52:05,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:52:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:05,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:52:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:05,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:52:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:52:05,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:05,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:52:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:52:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:52:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:05,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:52:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:52:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:05,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:52:05,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 00:52:05,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:05,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:52:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-14 00:52:05,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384755329] [2020-10-14 00:52:05,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:05,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:52:05,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966290261] [2020-10-14 00:52:05,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:52:05,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:05,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:52:05,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:52:05,466 INFO L87 Difference]: Start difference. First operand 38386 states and 49495 transitions. Second operand 8 states. [2020-10-14 00:52:05,728 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:06,314 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:52:08,225 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:12,642 INFO L93 Difference]: Finished difference Result 166902 states and 238387 transitions. [2020-10-14 00:52:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:52:12,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 329 [2020-10-14 00:52:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:13,203 INFO L225 Difference]: With dead ends: 166902 [2020-10-14 00:52:13,203 INFO L226 Difference]: Without dead ends: 128522 [2020-10-14 00:52:13,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:52:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128522 states. [2020-10-14 00:52:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128522 to 127973. [2020-10-14 00:52:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127973 states. [2020-10-14 00:52:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127973 states to 127973 states and 176317 transitions. [2020-10-14 00:52:18,822 INFO L78 Accepts]: Start accepts. Automaton has 127973 states and 176317 transitions. Word has length 329 [2020-10-14 00:52:18,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:18,822 INFO L479 AbstractCegarLoop]: Abstraction has 127973 states and 176317 transitions. [2020-10-14 00:52:18,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:52:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 127973 states and 176317 transitions. [2020-10-14 00:52:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 00:52:19,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:19,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:52:19,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:52:19,124 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:19,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1697375022, now seen corresponding path program 1 times [2020-10-14 00:52:19,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:19,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577236396] [2020-10-14 00:52:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:20,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:52:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:52:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,378 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:52:24,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:52:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:52:24,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:52:24,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:52:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:52:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:52:24,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:52:24,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:52:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:24,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:52:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:52:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:52:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:24,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:24,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:52:24,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 00:52:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:24,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 00:52:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 157 proven. 40 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 00:52:24,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577236396] [2020-10-14 00:52:24,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:24,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:24,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069275930] [2020-10-14 00:52:24,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:24,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:24,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:24,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:24,865 INFO L87 Difference]: Start difference. First operand 127973 states and 176317 transitions. Second operand 7 states. [2020-10-14 00:52:25,008 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:52:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:30,918 INFO L93 Difference]: Finished difference Result 358303 states and 494010 transitions. [2020-10-14 00:52:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:52:30,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-14 00:52:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:31,904 INFO L225 Difference]: With dead ends: 358303 [2020-10-14 00:52:31,904 INFO L226 Difference]: Without dead ends: 230344 [2020-10-14 00:52:32,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:52:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230344 states. [2020-10-14 00:52:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230344 to 230316. [2020-10-14 00:52:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230316 states. [2020-10-14 00:52:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230316 states to 230316 states and 315961 transitions. [2020-10-14 00:52:41,822 INFO L78 Accepts]: Start accepts. Automaton has 230316 states and 315961 transitions. Word has length 331 [2020-10-14 00:52:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:41,823 INFO L479 AbstractCegarLoop]: Abstraction has 230316 states and 315961 transitions. [2020-10-14 00:52:41,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 230316 states and 315961 transitions. [2020-10-14 00:52:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 00:52:42,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:42,346 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:52:42,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:52:42,347 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:42,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1045174713, now seen corresponding path program 1 times [2020-10-14 00:52:42,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:42,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097685611] [2020-10-14 00:52:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 00:52:47,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:52:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:52:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 00:52:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:52:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,547 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:47,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:47,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:52:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:52:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:52:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:52:47,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:52:47,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:52:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:52:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:52:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:52:47,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:52:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:52:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:52:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:52:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:52:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:52:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:52:47,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:52:47,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:52:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:52:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:52:47,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 00:52:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:47,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 00:52:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:47,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 190 proven. 40 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 00:52:48,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097685611] [2020-10-14 00:52:48,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:48,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:48,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414159367] [2020-10-14 00:52:48,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:48,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:48,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:48,021 INFO L87 Difference]: Start difference. First operand 230316 states and 315961 transitions. Second operand 7 states. [2020-10-14 00:52:48,159 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:52:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:52,765 INFO L93 Difference]: Finished difference Result 422729 states and 575484 transitions. [2020-10-14 00:52:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:52:52,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 00:52:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:59,171 INFO L225 Difference]: With dead ends: 422729 [2020-10-14 00:52:59,171 INFO L226 Difference]: Without dead ends: 192427 [2020-10-14 00:52:59,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:52:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192427 states. [2020-10-14 00:53:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192427 to 191993. [2020-10-14 00:53:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191993 states. [2020-10-14 00:53:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191993 states to 191993 states and 239315 transitions. [2020-10-14 00:53:03,348 INFO L78 Accepts]: Start accepts. Automaton has 191993 states and 239315 transitions. Word has length 337 [2020-10-14 00:53:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:03,348 INFO L479 AbstractCegarLoop]: Abstraction has 191993 states and 239315 transitions. [2020-10-14 00:53:03,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:53:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 191993 states and 239315 transitions. [2020-10-14 00:53:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-14 00:53:03,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:03,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:03,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:53:03,625 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:03,625 INFO L82 PathProgramCache]: Analyzing trace with hash -361831547, now seen corresponding path program 1 times [2020-10-14 00:53:03,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:03,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750066795] [2020-10-14 00:53:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:11,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:11,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-14 00:53:11,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:53:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8204 [2020-10-14 00:53:11,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:11,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 00:53:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:53:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:12,068 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:53:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:12,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:53:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:53:12,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:12,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:12,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:53:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:12,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:12,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:53:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 00:53:12,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:12,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:53:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 00:53:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:12,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:53:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:53:12,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750066795] [2020-10-14 00:53:12,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:12,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:53:12,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366266589] [2020-10-14 00:53:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:53:12,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:53:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:53:12,581 INFO L87 Difference]: Start difference. First operand 191993 states and 239315 transitions. Second operand 7 states. [2020-10-14 00:53:12,713 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:53:13,537 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:53:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:17,515 INFO L93 Difference]: Finished difference Result 399506 states and 499601 transitions. [2020-10-14 00:53:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:53:17,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-14 00:53:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:18,175 INFO L225 Difference]: With dead ends: 399506 [2020-10-14 00:53:18,175 INFO L226 Difference]: Without dead ends: 207535 [2020-10-14 00:53:19,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:53:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207535 states. [2020-10-14 00:53:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207535 to 207426. [2020-10-14 00:53:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207426 states. [2020-10-14 00:53:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207426 states to 207426 states and 255514 transitions. [2020-10-14 00:53:22,815 INFO L78 Accepts]: Start accepts. Automaton has 207426 states and 255514 transitions. Word has length 396 [2020-10-14 00:53:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:22,815 INFO L479 AbstractCegarLoop]: Abstraction has 207426 states and 255514 transitions. [2020-10-14 00:53:22,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:53:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 207426 states and 255514 transitions. [2020-10-14 00:53:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-14 00:53:27,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:27,150 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:53:27,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:53:27,150 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1846042437, now seen corresponding path program 1 times [2020-10-14 00:53:27,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:27,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282340539] [2020-10-14 00:53:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:53:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 00:53:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,452 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:53:32,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:53:32,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:53:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:53:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 00:53:32,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 00:53:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 00:53:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 00:53:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:33,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:33,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:53:33,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:53:33,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:33,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 00:53:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 227 proven. 64 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 00:53:33,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282340539] [2020-10-14 00:53:33,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:33,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:53:33,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108877957] [2020-10-14 00:53:33,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:53:33,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:33,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:53:33,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:53:33,634 INFO L87 Difference]: Start difference. First operand 207426 states and 255514 transitions. Second operand 7 states. [2020-10-14 00:53:33,996 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:53:35,018 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:53:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:42,453 INFO L93 Difference]: Finished difference Result 460328 states and 606818 transitions. [2020-10-14 00:53:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:53:42,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-14 00:53:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:43,304 INFO L225 Difference]: With dead ends: 460328 [2020-10-14 00:53:43,305 INFO L226 Difference]: Without dead ends: 252928 [2020-10-14 00:53:43,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:53:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252928 states. [2020-10-14 00:53:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252928 to 243322. [2020-10-14 00:53:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243322 states.