/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/Problem11_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:38:02,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:38:02,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:38:02,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:38:02,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:38:02,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:38:02,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:38:02,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:38:02,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:38:02,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:38:02,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:38:02,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:38:02,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:38:02,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:38:02,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:38:02,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:38:02,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:38:02,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:38:02,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:38:02,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:38:02,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:38:02,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:38:02,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:38:02,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:38:02,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:38:02,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:38:02,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:38:02,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:38:02,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:38:02,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:38:02,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:38:02,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:38:02,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:38:02,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:38:02,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:38:02,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:38:02,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:38:02,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:38:02,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:38:02,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:38:02,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:38:02,614 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 02:38:02,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:38:02,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:38:02,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:38:02,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:38:02,661 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:38:02,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:38:02,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:38:02,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:38:02,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:38:02,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:38:02,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:38:02,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:38:02,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:38:02,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:38:02,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:38:02,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:38:02,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:38:02,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:38:02,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:38:02,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:38:02,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:38:02,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:38:02,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:38:02,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:38:02,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:38:02,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:38:02,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:38:02,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:38:02,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:38:02,668 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 02:38:02,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:38:02,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:38:02,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:38:02,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:38:02,994 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:38:02,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41.c [2020-10-14 02:38:03,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92c00333/4cf316937661462da1af4d052078a12f/FLAG578f3fb3d [2020-10-14 02:38:03,745 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:38:03,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label41.c [2020-10-14 02:38:03,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92c00333/4cf316937661462da1af4d052078a12f/FLAG578f3fb3d [2020-10-14 02:38:03,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92c00333/4cf316937661462da1af4d052078a12f [2020-10-14 02:38:03,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:38:03,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:38:03,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:38:03,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:38:03,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:38:03,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:03" (1/1) ... [2020-10-14 02:38:03,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1497b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:03, skipping insertion in model container [2020-10-14 02:38:03,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:03" (1/1) ... [2020-10-14 02:38:03,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:38:04,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:38:04,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:38:04,728 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:38:04,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:38:05,020 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:38:05,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05 WrapperNode [2020-10-14 02:38:05,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:38:05,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:38:05,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:38:05,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:38:05,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... [2020-10-14 02:38:05,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:38:05,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:38:05,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:38:05,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:38:05,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:38:05,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:38:05,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:38:05,325 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:38:05,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:38:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:38:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:38:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:38:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:38:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:38:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:38:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:38:07,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:38:07,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:38:07,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:07 BoogieIcfgContainer [2020-10-14 02:38:07,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:38:07,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:38:07,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:38:07,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:38:07,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:38:03" (1/3) ... [2020-10-14 02:38:07,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658d4d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:07, skipping insertion in model container [2020-10-14 02:38:07,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:05" (2/3) ... [2020-10-14 02:38:07,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658d4d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:07, skipping insertion in model container [2020-10-14 02:38:07,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:07" (3/3) ... [2020-10-14 02:38:07,395 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label41.c [2020-10-14 02:38:07,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:38:07,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:38:07,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:38:07,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:38:07,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:38:07,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:38:07,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:38:07,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:38:07,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:38:07,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:38:07,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:38:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:38:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 02:38:07,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:07,496 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] [2020-10-14 02:38:07,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2101888266, now seen corresponding path program 1 times [2020-10-14 02:38:07,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:07,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511769172] [2020-10-14 02:38:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:07,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:08,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:08,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 02:38:08,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:08,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 02:38:08,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:08,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:38:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:38:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:38:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:38:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:08,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:08,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:08,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:08,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:08,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 02:38:08,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:08,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:38:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:08,205 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 02:38:08,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511769172] [2020-10-14 02:38:08,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:38:08,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:38:08,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572579637] [2020-10-14 02:38:08,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:38:08,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:08,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:38:08,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:38:08,232 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 02:38:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:10,825 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-14 02:38:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:10,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 02:38:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:10,847 INFO L225 Difference]: With dead ends: 791 [2020-10-14 02:38:10,847 INFO L226 Difference]: Without dead ends: 434 [2020-10-14 02:38:10,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-14 02:38:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-14 02:38:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 02:38:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-14 02:38:10,961 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 27 [2020-10-14 02:38:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:10,962 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-14 02:38:10,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:38:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-14 02:38:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 02:38:10,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:10,967 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] [2020-10-14 02:38:10,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:38:10,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:10,969 INFO L82 PathProgramCache]: Analyzing trace with hash 753341258, now seen corresponding path program 1 times [2020-10-14 02:38:10,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:10,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34236399] [2020-10-14 02:38:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 02:38:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-14 02:38:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:12,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:38:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:38:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:12,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:12,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:12,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:12,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:12,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:12,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:12,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:12,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:38:12,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:38:12,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:12,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:38:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:12,576 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 02:38:12,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34236399] [2020-10-14 02:38:12,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:12,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:12,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411225931] [2020-10-14 02:38:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:12,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:12,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:12,581 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 5 states. [2020-10-14 02:38:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:14,881 INFO L93 Difference]: Finished difference Result 1248 states and 1817 transitions. [2020-10-14 02:38:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:14,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 02:38:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:14,889 INFO L225 Difference]: With dead ends: 1248 [2020-10-14 02:38:14,890 INFO L226 Difference]: Without dead ends: 824 [2020-10-14 02:38:14,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-14 02:38:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 820. [2020-10-14 02:38:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-14 02:38:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1098 transitions. [2020-10-14 02:38:14,939 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1098 transitions. Word has length 99 [2020-10-14 02:38:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:14,940 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1098 transitions. [2020-10-14 02:38:14,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1098 transitions. [2020-10-14 02:38:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 02:38:14,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:14,943 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] [2020-10-14 02:38:14,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:38:14,944 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash -945560071, now seen corresponding path program 1 times [2020-10-14 02:38:14,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:14,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991406304] [2020-10-14 02:38:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:16,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:16,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 02:38:16,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:38:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-14 02:38:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:16,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 02:38:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:38:16,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:16,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:16,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:16,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:16,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:38:16,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:38:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:16,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:38:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:16,433 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 02:38:16,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991406304] [2020-10-14 02:38:16,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:16,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:16,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711542507] [2020-10-14 02:38:16,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:16,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:16,436 INFO L87 Difference]: Start difference. First operand 820 states and 1098 transitions. Second operand 5 states. [2020-10-14 02:38:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:18,925 INFO L93 Difference]: Finished difference Result 2417 states and 3295 transitions. [2020-10-14 02:38:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:18,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-14 02:38:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:18,950 INFO L225 Difference]: With dead ends: 2417 [2020-10-14 02:38:18,951 INFO L226 Difference]: Without dead ends: 1603 [2020-10-14 02:38:18,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-10-14 02:38:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1586. [2020-10-14 02:38:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-14 02:38:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2028 transitions. [2020-10-14 02:38:19,028 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2028 transitions. Word has length 100 [2020-10-14 02:38:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:19,029 INFO L479 AbstractCegarLoop]: Abstraction has 1586 states and 2028 transitions. [2020-10-14 02:38:19,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2028 transitions. [2020-10-14 02:38:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 02:38:19,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:19,042 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] [2020-10-14 02:38:19,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:38:19,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:19,045 INFO L82 PathProgramCache]: Analyzing trace with hash -55981350, now seen corresponding path program 1 times [2020-10-14 02:38:19,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:19,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208547024] [2020-10-14 02:38:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:19,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:38:19,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-14 02:38:19,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:19,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 02:38:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:38:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 02:38:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:20,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:20,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:20,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:20,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:38:20,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:20,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:38:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:20,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:20,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:38:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:38:20,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:20,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:38:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:20,241 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 02:38:20,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208547024] [2020-10-14 02:38:20,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:20,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:20,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845627815] [2020-10-14 02:38:20,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:20,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:20,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:20,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:20,247 INFO L87 Difference]: Start difference. First operand 1586 states and 2028 transitions. Second operand 5 states. [2020-10-14 02:38:22,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:22,641 INFO L93 Difference]: Finished difference Result 3744 states and 4923 transitions. [2020-10-14 02:38:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:22,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 02:38:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:22,659 INFO L225 Difference]: With dead ends: 3744 [2020-10-14 02:38:22,659 INFO L226 Difference]: Without dead ends: 2164 [2020-10-14 02:38:22,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-10-14 02:38:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2158. [2020-10-14 02:38:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2158 states. [2020-10-14 02:38:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 2810 transitions. [2020-10-14 02:38:22,733 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 2810 transitions. Word has length 107 [2020-10-14 02:38:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:22,734 INFO L479 AbstractCegarLoop]: Abstraction has 2158 states and 2810 transitions. [2020-10-14 02:38:22,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 2810 transitions. [2020-10-14 02:38:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 02:38:22,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:22,738 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] [2020-10-14 02:38:22,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:38:22,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:22,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1907478662, now seen corresponding path program 1 times [2020-10-14 02:38:22,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:22,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754475969] [2020-10-14 02:38:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:23,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:23,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 02:38:23,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:38:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-14 02:38:23,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:23,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 02:38:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:38:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:23,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:23,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:38:23,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:23,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:23,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:23,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:38:23,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 02:38:23,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:23,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:38:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:23,910 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 02:38:23,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754475969] [2020-10-14 02:38:23,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:23,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:23,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808656117] [2020-10-14 02:38:23,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:23,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:23,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:23,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:23,918 INFO L87 Difference]: Start difference. First operand 2158 states and 2810 transitions. Second operand 5 states. [2020-10-14 02:38:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:26,205 INFO L93 Difference]: Finished difference Result 5474 states and 7316 transitions. [2020-10-14 02:38:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:26,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-14 02:38:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:26,230 INFO L225 Difference]: With dead ends: 5474 [2020-10-14 02:38:26,231 INFO L226 Difference]: Without dead ends: 3322 [2020-10-14 02:38:26,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2020-10-14 02:38:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3303. [2020-10-14 02:38:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3303 states. [2020-10-14 02:38:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 4217 transitions. [2020-10-14 02:38:26,324 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 4217 transitions. Word has length 113 [2020-10-14 02:38:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:26,324 INFO L479 AbstractCegarLoop]: Abstraction has 3303 states and 4217 transitions. [2020-10-14 02:38:26,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 4217 transitions. [2020-10-14 02:38:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 02:38:26,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:26,327 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] [2020-10-14 02:38:26,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:38:26,327 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:26,327 INFO L82 PathProgramCache]: Analyzing trace with hash 867903510, now seen corresponding path program 1 times [2020-10-14 02:38:26,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:26,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675977273] [2020-10-14 02:38:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:27,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:27,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:38:27,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:38:27,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-14 02:38:27,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:27,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:27,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:27,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 02:38:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:38:27,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:27,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:27,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:27,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:27,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:27,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:38:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:38:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:38:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:27,407 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 02:38:27,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675977273] [2020-10-14 02:38:27,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:27,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:27,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424073724] [2020-10-14 02:38:27,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:27,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:27,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:27,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:27,410 INFO L87 Difference]: Start difference. First operand 3303 states and 4217 transitions. Second operand 5 states. [2020-10-14 02:38:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:29,678 INFO L93 Difference]: Finished difference Result 7782 states and 10241 transitions. [2020-10-14 02:38:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:29,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 02:38:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:29,705 INFO L225 Difference]: With dead ends: 7782 [2020-10-14 02:38:29,705 INFO L226 Difference]: Without dead ends: 4485 [2020-10-14 02:38:29,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2020-10-14 02:38:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 4457. [2020-10-14 02:38:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4457 states. [2020-10-14 02:38:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 5675 transitions. [2020-10-14 02:38:29,823 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 5675 transitions. Word has length 121 [2020-10-14 02:38:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:29,823 INFO L479 AbstractCegarLoop]: Abstraction has 4457 states and 5675 transitions. [2020-10-14 02:38:29,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 5675 transitions. [2020-10-14 02:38:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 02:38:29,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:29,828 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:38:29,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:38:29,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:29,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1760465606, now seen corresponding path program 1 times [2020-10-14 02:38:29,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:29,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508373175] [2020-10-14 02:38:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:30,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 02:38:34,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:38:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 02:38:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:34,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 02:38:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:38:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:34,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:34,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:34,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:38:34,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:34,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:34,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:35,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:38:35,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:38:35,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:35,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:38:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 02:38:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:35,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:35,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:38:35,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 02:38:35,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:35,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:38:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:35,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508373175] [2020-10-14 02:38:35,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:35,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:35,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106398964] [2020-10-14 02:38:35,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:35,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:35,555 INFO L87 Difference]: Start difference. First operand 4457 states and 5675 transitions. Second operand 7 states. [2020-10-14 02:38:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:37,953 INFO L93 Difference]: Finished difference Result 10673 states and 14015 transitions. [2020-10-14 02:38:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:38:37,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-14 02:38:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:37,980 INFO L225 Difference]: With dead ends: 10673 [2020-10-14 02:38:37,981 INFO L226 Difference]: Without dead ends: 6222 [2020-10-14 02:38:37,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:38:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2020-10-14 02:38:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6212. [2020-10-14 02:38:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-10-14 02:38:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 7769 transitions. [2020-10-14 02:38:38,141 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 7769 transitions. Word has length 185 [2020-10-14 02:38:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:38,142 INFO L479 AbstractCegarLoop]: Abstraction has 6212 states and 7769 transitions. [2020-10-14 02:38:38,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 7769 transitions. [2020-10-14 02:38:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 02:38:38,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:38,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 02:38:38,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:38:38,150 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash 689620221, now seen corresponding path program 1 times [2020-10-14 02:38:38,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:38,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177571366] [2020-10-14 02:38:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 02:38:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:38:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-10-14 02:38:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:42,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:38:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 02:38:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:38:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:42,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:42,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:42,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:42,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:38:42,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 02:38:42,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:42,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:38:42,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 02:38:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:42,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:42,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:38:42,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:42,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 02:38:42,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:42,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:38:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:42,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177571366] [2020-10-14 02:38:42,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:42,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:42,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081188530] [2020-10-14 02:38:42,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:42,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:42,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:42,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:42,806 INFO L87 Difference]: Start difference. First operand 6212 states and 7769 transitions. Second operand 7 states. [2020-10-14 02:38:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:45,568 INFO L93 Difference]: Finished difference Result 16721 states and 21424 transitions. [2020-10-14 02:38:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:38:45,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 02:38:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:45,626 INFO L225 Difference]: With dead ends: 16721 [2020-10-14 02:38:45,626 INFO L226 Difference]: Without dead ends: 10515 [2020-10-14 02:38:45,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2020-10-14 02:38:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 10470. [2020-10-14 02:38:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10470 states. [2020-10-14 02:38:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10470 states to 10470 states and 13202 transitions. [2020-10-14 02:38:45,890 INFO L78 Accepts]: Start accepts. Automaton has 10470 states and 13202 transitions. Word has length 222 [2020-10-14 02:38:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:45,891 INFO L479 AbstractCegarLoop]: Abstraction has 10470 states and 13202 transitions. [2020-10-14 02:38:45,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10470 states and 13202 transitions. [2020-10-14 02:38:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 02:38:45,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:45,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:45,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:38:45,900 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:45,900 INFO L82 PathProgramCache]: Analyzing trace with hash -530452644, now seen corresponding path program 1 times [2020-10-14 02:38:45,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:45,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295981110] [2020-10-14 02:38:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:50,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 02:38:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 02:38:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:51,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:51,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:38:51,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:38:51,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:51,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:38:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 02:38:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:51,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:38:51,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 02:38:51,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:51,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 02:38:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:51,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295981110] [2020-10-14 02:38:51,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:51,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:51,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284318522] [2020-10-14 02:38:51,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:51,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:51,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:51,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:51,580 INFO L87 Difference]: Start difference. First operand 10470 states and 13202 transitions. Second operand 7 states. [2020-10-14 02:38:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:54,846 INFO L93 Difference]: Finished difference Result 24030 states and 32284 transitions. [2020-10-14 02:38:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:38:54,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-14 02:38:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:54,909 INFO L225 Difference]: With dead ends: 24030 [2020-10-14 02:38:54,910 INFO L226 Difference]: Without dead ends: 13182 [2020-10-14 02:38:54,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2020-10-14 02:38:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 12991. [2020-10-14 02:38:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12991 states. [2020-10-14 02:38:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 16509 transitions. [2020-10-14 02:38:55,410 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 16509 transitions. Word has length 237 [2020-10-14 02:38:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:55,411 INFO L479 AbstractCegarLoop]: Abstraction has 12991 states and 16509 transitions. [2020-10-14 02:38:55,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 16509 transitions. [2020-10-14 02:38:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 02:38:55,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:55,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:55,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:38:55,426 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 107902853, now seen corresponding path program 1 times [2020-10-14 02:38:55,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:55,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942306993] [2020-10-14 02:38:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:56,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:56,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:56,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 02:38:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-14 02:38:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:56,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:38:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:38:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:56,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:38:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:38:56,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:56,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:38:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:38:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:38:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 02:38:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:38:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:57,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942306993] [2020-10-14 02:38:57,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:57,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:57,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468232339] [2020-10-14 02:38:57,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:57,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:57,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:57,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:57,196 INFO L87 Difference]: Start difference. First operand 12991 states and 16509 transitions. Second operand 7 states. [2020-10-14 02:38:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:59,897 INFO L93 Difference]: Finished difference Result 28359 states and 36340 transitions. [2020-10-14 02:38:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:38:59,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 02:38:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:59,954 INFO L225 Difference]: With dead ends: 28359 [2020-10-14 02:38:59,954 INFO L226 Difference]: Without dead ends: 15562 [2020-10-14 02:38:59,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15562 states. [2020-10-14 02:39:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15562 to 14719. [2020-10-14 02:39:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14719 states. [2020-10-14 02:39:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14719 states to 14719 states and 18315 transitions. [2020-10-14 02:39:00,379 INFO L78 Accepts]: Start accepts. Automaton has 14719 states and 18315 transitions. Word has length 265 [2020-10-14 02:39:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:00,380 INFO L479 AbstractCegarLoop]: Abstraction has 14719 states and 18315 transitions. [2020-10-14 02:39:00,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 14719 states and 18315 transitions. [2020-10-14 02:39:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 02:39:00,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:00,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:00,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:39:00,395 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1621505615, now seen corresponding path program 1 times [2020-10-14 02:39:00,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:00,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097208773] [2020-10-14 02:39:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 02:39:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-14 02:39:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 02:39:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:02,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:02,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:02,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:39:02,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 02:39:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:39:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:02,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097208773] [2020-10-14 02:39:02,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:02,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:02,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710997569] [2020-10-14 02:39:02,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:02,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:02,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:02,604 INFO L87 Difference]: Start difference. First operand 14719 states and 18315 transitions. Second operand 7 states. [2020-10-14 02:39:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:06,610 INFO L93 Difference]: Finished difference Result 32274 states and 42087 transitions. [2020-10-14 02:39:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:06,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-14 02:39:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:06,672 INFO L225 Difference]: With dead ends: 32274 [2020-10-14 02:39:06,672 INFO L226 Difference]: Without dead ends: 17749 [2020-10-14 02:39:06,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17749 states. [2020-10-14 02:39:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17749 to 17021. [2020-10-14 02:39:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17021 states. [2020-10-14 02:39:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17021 states to 17021 states and 20731 transitions. [2020-10-14 02:39:07,072 INFO L78 Accepts]: Start accepts. Automaton has 17021 states and 20731 transitions. Word has length 271 [2020-10-14 02:39:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:07,073 INFO L479 AbstractCegarLoop]: Abstraction has 17021 states and 20731 transitions. [2020-10-14 02:39:07,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 17021 states and 20731 transitions. [2020-10-14 02:39:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 02:39:07,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:07,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:39:07,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:39:07,087 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:07,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1807660210, now seen corresponding path program 1 times [2020-10-14 02:39:07,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:07,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511058921] [2020-10-14 02:39:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:07,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:07,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 02:39:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-14 02:39:07,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:07,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-14 02:39:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:39:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:07,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:07,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:07,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:07,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:07,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:07,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:07,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:07,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:07,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:39:07,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:07,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:07,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:07,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:39:07,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:07,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:39:07,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:07,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-14 02:39:08,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511058921] [2020-10-14 02:39:08,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:08,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:08,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211978851] [2020-10-14 02:39:08,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:08,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:08,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:08,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:08,048 INFO L87 Difference]: Start difference. First operand 17021 states and 20731 transitions. Second operand 5 states. [2020-10-14 02:39:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:10,471 INFO L93 Difference]: Finished difference Result 34994 states and 42947 transitions. [2020-10-14 02:39:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:10,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-14 02:39:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:10,531 INFO L225 Difference]: With dead ends: 34994 [2020-10-14 02:39:10,532 INFO L226 Difference]: Without dead ends: 18167 [2020-10-14 02:39:10,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18167 states. [2020-10-14 02:39:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18167 to 17958. [2020-10-14 02:39:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17958 states. [2020-10-14 02:39:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17958 states to 17958 states and 21768 transitions. [2020-10-14 02:39:10,852 INFO L78 Accepts]: Start accepts. Automaton has 17958 states and 21768 transitions. Word has length 273 [2020-10-14 02:39:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:10,853 INFO L479 AbstractCegarLoop]: Abstraction has 17958 states and 21768 transitions. [2020-10-14 02:39:10,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 17958 states and 21768 transitions. [2020-10-14 02:39:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 02:39:10,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:10,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:10,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:39:10,887 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1758246872, now seen corresponding path program 1 times [2020-10-14 02:39:10,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:10,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327744530] [2020-10-14 02:39:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:12,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-14 02:39:12,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-14 02:39:12,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:12,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-14 02:39:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 02:39:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:12,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:12,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:12,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:12,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:12,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:12,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 02:39:12,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:12,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:12,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:12,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:12,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:39:12,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:12,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:12,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:39:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:39:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-14 02:39:12,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327744530] [2020-10-14 02:39:12,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:12,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:12,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160187409] [2020-10-14 02:39:12,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:12,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:12,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:12,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:12,823 INFO L87 Difference]: Start difference. First operand 17958 states and 21768 transitions. Second operand 5 states. [2020-10-14 02:39:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:15,152 INFO L93 Difference]: Finished difference Result 34954 states and 42454 transitions. [2020-10-14 02:39:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:15,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 359 [2020-10-14 02:39:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:15,194 INFO L225 Difference]: With dead ends: 34954 [2020-10-14 02:39:15,195 INFO L226 Difference]: Without dead ends: 17968 [2020-10-14 02:39:15,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17968 states. [2020-10-14 02:39:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17968 to 17952. [2020-10-14 02:39:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17952 states. [2020-10-14 02:39:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17952 states to 17952 states and 21246 transitions. [2020-10-14 02:39:15,499 INFO L78 Accepts]: Start accepts. Automaton has 17952 states and 21246 transitions. Word has length 359 [2020-10-14 02:39:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:15,500 INFO L479 AbstractCegarLoop]: Abstraction has 17952 states and 21246 transitions. [2020-10-14 02:39:15,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 17952 states and 21246 transitions. [2020-10-14 02:39:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-14 02:39:15,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:15,554 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:15,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:39:15,555 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1041604247, now seen corresponding path program 1 times [2020-10-14 02:39:15,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:15,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064614319] [2020-10-14 02:39:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:15,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-14 02:39:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:39:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 02:39:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 02:39:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:39:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:20,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:20,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:39:20,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 02:39:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:39:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:39:20,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 02:39:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:21,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 02:39:21,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:39:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-14 02:39:21,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064614319] [2020-10-14 02:39:21,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:21,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:21,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907385264] [2020-10-14 02:39:21,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:21,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:21,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:21,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:21,218 INFO L87 Difference]: Start difference. First operand 17952 states and 21246 transitions. Second operand 7 states. [2020-10-14 02:39:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:25,325 INFO L93 Difference]: Finished difference Result 40249 states and 47813 transitions. [2020-10-14 02:39:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:25,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 468 [2020-10-14 02:39:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:25,373 INFO L225 Difference]: With dead ends: 40249 [2020-10-14 02:39:25,373 INFO L226 Difference]: Without dead ends: 22695 [2020-10-14 02:39:25,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22695 states. [2020-10-14 02:39:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22695 to 22305. [2020-10-14 02:39:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22305 states. [2020-10-14 02:39:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22305 states to 22305 states and 26278 transitions. [2020-10-14 02:39:25,733 INFO L78 Accepts]: Start accepts. Automaton has 22305 states and 26278 transitions. Word has length 468 [2020-10-14 02:39:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:25,734 INFO L479 AbstractCegarLoop]: Abstraction has 22305 states and 26278 transitions. [2020-10-14 02:39:25,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 22305 states and 26278 transitions. [2020-10-14 02:39:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-14 02:39:25,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:25,787 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:25,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:39:25,788 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:25,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:25,788 INFO L82 PathProgramCache]: Analyzing trace with hash 679149235, now seen corresponding path program 1 times [2020-10-14 02:39:25,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:25,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970072532] [2020-10-14 02:39:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:26,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-14 02:39:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:39:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 02:39:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 02:39:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:39:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:30,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:30,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:39:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:39:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 02:39:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:39:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-14 02:39:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:31,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 02:39:31,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:39:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 171 proven. 168 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-14 02:39:31,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970072532] [2020-10-14 02:39:31,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:31,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:31,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285230519] [2020-10-14 02:39:31,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:31,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:31,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:31,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:31,652 INFO L87 Difference]: Start difference. First operand 22305 states and 26278 transitions. Second operand 7 states. [2020-10-14 02:39:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:34,142 INFO L93 Difference]: Finished difference Result 43891 states and 51789 transitions. [2020-10-14 02:39:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:39:34,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 503 [2020-10-14 02:39:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:34,181 INFO L225 Difference]: With dead ends: 43891 [2020-10-14 02:39:34,181 INFO L226 Difference]: Without dead ends: 24256 [2020-10-14 02:39:34,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24256 states. [2020-10-14 02:39:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24256 to 24048. [2020-10-14 02:39:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24048 states. [2020-10-14 02:39:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24048 states to 24048 states and 28095 transitions. [2020-10-14 02:39:34,562 INFO L78 Accepts]: Start accepts. Automaton has 24048 states and 28095 transitions. Word has length 503 [2020-10-14 02:39:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:34,563 INFO L479 AbstractCegarLoop]: Abstraction has 24048 states and 28095 transitions. [2020-10-14 02:39:34,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 24048 states and 28095 transitions. [2020-10-14 02:39:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-14 02:39:34,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:34,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:34,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:39:34,586 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash -64162777, now seen corresponding path program 1 times [2020-10-14 02:39:34,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:34,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846919588] [2020-10-14 02:39:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:34,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:39,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-14 02:39:39,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:39:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 02:39:39,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:39,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 02:39:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:39:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-14 02:39:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:39,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:39:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:39,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:39:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:39:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:39:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:40,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 02:39:40,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:39:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:39:40,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:39:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:40,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:39:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 02:39:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:39:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 288 proven. 345 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 02:39:41,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846919588] [2020-10-14 02:39:41,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:41,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:39:41,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285862715] [2020-10-14 02:39:41,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:39:41,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:41,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:39:41,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:39:41,162 INFO L87 Difference]: Start difference. First operand 24048 states and 28095 transitions. Second operand 10 states. [2020-10-14 02:39:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:45,878 INFO L93 Difference]: Finished difference Result 48786 states and 57027 transitions. [2020-10-14 02:39:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 02:39:45,879 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 513 [2020-10-14 02:39:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:45,930 INFO L225 Difference]: With dead ends: 48786 [2020-10-14 02:39:45,930 INFO L226 Difference]: Without dead ends: 27978 [2020-10-14 02:39:45,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-14 02:39:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27978 states. [2020-10-14 02:39:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27978 to 27192. [2020-10-14 02:39:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27192 states. [2020-10-14 02:39:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27192 states to 27192 states and 31623 transitions. [2020-10-14 02:39:46,332 INFO L78 Accepts]: Start accepts. Automaton has 27192 states and 31623 transitions. Word has length 513 [2020-10-14 02:39:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:46,333 INFO L479 AbstractCegarLoop]: Abstraction has 27192 states and 31623 transitions. [2020-10-14 02:39:46,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:39:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 27192 states and 31623 transitions. [2020-10-14 02:39:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-14 02:39:46,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:46,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:46,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:39:46,361 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1828799029, now seen corresponding path program 1 times [2020-10-14 02:39:46,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:46,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840813249] [2020-10-14 02:39:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:47,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 02:39:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:39:51,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:39:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 02:39:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:39:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:39:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-14 02:39:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-14 02:39:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:51,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 02:39:51,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:39:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 171 proven. 168 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-14 02:39:52,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840813249] [2020-10-14 02:39:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:52,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:52,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150006491] [2020-10-14 02:39:52,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:52,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:52,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:52,058 INFO L87 Difference]: Start difference. First operand 27192 states and 31623 transitions. Second operand 7 states. [2020-10-14 02:39:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:56,504 INFO L93 Difference]: Finished difference Result 51438 states and 60076 transitions. [2020-10-14 02:39:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:56,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 530 [2020-10-14 02:39:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:56,559 INFO L225 Difference]: With dead ends: 51438 [2020-10-14 02:39:56,559 INFO L226 Difference]: Without dead ends: 29477 [2020-10-14 02:39:56,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:56,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29477 states. [2020-10-14 02:39:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29477 to 26057. [2020-10-14 02:39:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26057 states. [2020-10-14 02:39:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26057 states to 26057 states and 30231 transitions. [2020-10-14 02:39:56,967 INFO L78 Accepts]: Start accepts. Automaton has 26057 states and 30231 transitions. Word has length 530 [2020-10-14 02:39:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:56,967 INFO L479 AbstractCegarLoop]: Abstraction has 26057 states and 30231 transitions. [2020-10-14 02:39:56,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 26057 states and 30231 transitions. [2020-10-14 02:39:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-14 02:39:57,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:57,010 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:57,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:39:57,011 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2075613993, now seen corresponding path program 1 times [2020-10-14 02:39:57,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:57,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710592938] [2020-10-14 02:39:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-14 02:40:02,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 02:40:02,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 02:40:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:40:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:40:02,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 02:40:02,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:40:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 02:40:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 02:40:02,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-14 02:40:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:02,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:40:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-14 02:40:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-10-14 02:40:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:02,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 02:40:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 186 proven. 299 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-14 02:40:02,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710592938] [2020-10-14 02:40:02,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:02,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:02,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220307758] [2020-10-14 02:40:02,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:02,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:02,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:02,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:02,944 INFO L87 Difference]: Start difference. First operand 26057 states and 30231 transitions. Second operand 7 states. [2020-10-14 02:40:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:05,858 INFO L93 Difference]: Finished difference Result 48632 states and 56551 transitions. [2020-10-14 02:40:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:40:05,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 574 [2020-10-14 02:40:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:05,910 INFO L225 Difference]: With dead ends: 48632 [2020-10-14 02:40:05,910 INFO L226 Difference]: Without dead ends: 28543 [2020-10-14 02:40:05,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:40:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28543 states. [2020-10-14 02:40:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28543 to 26803. [2020-10-14 02:40:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26803 states. [2020-10-14 02:40:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26803 states to 26803 states and 30866 transitions. [2020-10-14 02:40:06,303 INFO L78 Accepts]: Start accepts. Automaton has 26803 states and 30866 transitions. Word has length 574 [2020-10-14 02:40:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:06,304 INFO L479 AbstractCegarLoop]: Abstraction has 26803 states and 30866 transitions. [2020-10-14 02:40:06,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 26803 states and 30866 transitions. [2020-10-14 02:40:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-14 02:40:06,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:06,346 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:06,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:40:06,347 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1190906800, now seen corresponding path program 1 times [2020-10-14 02:40:06,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:06,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787843855] [2020-10-14 02:40:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-14 02:40:11,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:40:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 02:40:11,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 02:40:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:40:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:40:11,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 02:40:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:40:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 02:40:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:11,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:40:11,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 02:40:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:40:11,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-14 02:40:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-14 02:40:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 189 proven. 299 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-14 02:40:12,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787843855] [2020-10-14 02:40:12,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:12,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:12,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646694828] [2020-10-14 02:40:12,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:12,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:12,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:12,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:12,510 INFO L87 Difference]: Start difference. First operand 26803 states and 30866 transitions. Second operand 7 states. [2020-10-14 02:40:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:15,546 INFO L93 Difference]: Finished difference Result 48238 states and 55656 transitions. [2020-10-14 02:40:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:40:15,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-14 02:40:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:15,589 INFO L225 Difference]: With dead ends: 48238 [2020-10-14 02:40:15,589 INFO L226 Difference]: Without dead ends: 26647 [2020-10-14 02:40:15,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:40:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26647 states. [2020-10-14 02:40:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26647 to 26599. [2020-10-14 02:40:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26599 states. [2020-10-14 02:40:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26599 states to 26599 states and 30602 transitions. [2020-10-14 02:40:15,950 INFO L78 Accepts]: Start accepts. Automaton has 26599 states and 30602 transitions. Word has length 577 [2020-10-14 02:40:15,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:15,950 INFO L479 AbstractCegarLoop]: Abstraction has 26599 states and 30602 transitions. [2020-10-14 02:40:15,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 26599 states and 30602 transitions. [2020-10-14 02:40:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-14 02:40:15,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:15,980 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:15,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:40:15,980 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:15,981 INFO L82 PathProgramCache]: Analyzing trace with hash -711755968, now seen corresponding path program 1 times [2020-10-14 02:40:15,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:15,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726639240] [2020-10-14 02:40:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:40:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:21,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:21,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:21,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:40:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 02:40:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 02:40:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:40:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-14 02:40:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:21,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-14 02:40:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:21,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:40:21,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 197 proven. 299 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-14 02:40:21,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726639240] [2020-10-14 02:40:21,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:21,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:21,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685503394] [2020-10-14 02:40:21,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:21,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:21,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:21,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:21,862 INFO L87 Difference]: Start difference. First operand 26599 states and 30602 transitions. Second operand 7 states. [2020-10-14 02:40:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:24,742 INFO L93 Difference]: Finished difference Result 48974 states and 56417 transitions. [2020-10-14 02:40:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:40:24,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 585 [2020-10-14 02:40:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:24,790 INFO L225 Difference]: With dead ends: 48974 [2020-10-14 02:40:24,790 INFO L226 Difference]: Without dead ends: 27779 [2020-10-14 02:40:24,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:40:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27779 states. [2020-10-14 02:40:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27779 to 27351. [2020-10-14 02:40:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27351 states. [2020-10-14 02:40:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 31295 transitions. [2020-10-14 02:40:25,126 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 31295 transitions. Word has length 585 [2020-10-14 02:40:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:25,126 INFO L479 AbstractCegarLoop]: Abstraction has 27351 states and 31295 transitions. [2020-10-14 02:40:25,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 31295 transitions. [2020-10-14 02:40:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-14 02:40:25,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:25,151 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:25,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:40:25,151 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:25,152 INFO L82 PathProgramCache]: Analyzing trace with hash -97408634, now seen corresponding path program 1 times [2020-10-14 02:40:25,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:25,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367646741] [2020-10-14 02:40:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:25,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 02:40:30,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:40:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:30,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:30,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 02:40:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-14 02:40:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:40:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 02:40:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:40:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-14 02:40:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:30,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:40:30,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:30,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-14 02:40:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:40:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 208 proven. 242 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-14 02:40:31,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367646741] [2020-10-14 02:40:31,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:31,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:31,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288121025] [2020-10-14 02:40:31,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:31,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:31,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:31,029 INFO L87 Difference]: Start difference. First operand 27351 states and 31295 transitions. Second operand 7 states. [2020-10-14 02:40:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:34,400 INFO L93 Difference]: Finished difference Result 53347 states and 61093 transitions. [2020-10-14 02:40:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:34,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 600 [2020-10-14 02:40:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:34,451 INFO L225 Difference]: With dead ends: 53347 [2020-10-14 02:40:34,451 INFO L226 Difference]: Without dead ends: 29466 [2020-10-14 02:40:34,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29466 states. [2020-10-14 02:40:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29466 to 27715. [2020-10-14 02:40:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27715 states. [2020-10-14 02:40:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27715 states to 27715 states and 31677 transitions. [2020-10-14 02:40:34,785 INFO L78 Accepts]: Start accepts. Automaton has 27715 states and 31677 transitions. Word has length 600 [2020-10-14 02:40:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:34,785 INFO L479 AbstractCegarLoop]: Abstraction has 27715 states and 31677 transitions. [2020-10-14 02:40:34,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 27715 states and 31677 transitions. [2020-10-14 02:40:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-10-14 02:40:34,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:34,807 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:34,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 02:40:34,808 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash 736822394, now seen corresponding path program 1 times [2020-10-14 02:40:34,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:34,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617225722] [2020-10-14 02:40:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:39,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:39,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-14 02:40:39,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:39,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 02:40:39,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:39,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 02:40:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:40:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:40:40,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 02:40:40,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:40:40,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:40:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 02:40:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-14 02:40:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:40,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-14 02:40:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 219 proven. 299 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2020-10-14 02:40:41,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617225722] [2020-10-14 02:40:41,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:41,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:41,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512584584] [2020-10-14 02:40:41,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:41,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:41,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:41,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:41,041 INFO L87 Difference]: Start difference. First operand 27715 states and 31677 transitions. Second operand 7 states. [2020-10-14 02:40:44,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:44,138 INFO L93 Difference]: Finished difference Result 49979 states and 58954 transitions. [2020-10-14 02:40:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:44,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 623 [2020-10-14 02:40:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:44,212 INFO L225 Difference]: With dead ends: 49979 [2020-10-14 02:40:44,213 INFO L226 Difference]: Without dead ends: 28800 [2020-10-14 02:40:44,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:40:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28800 states. [2020-10-14 02:40:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28800 to 28285. [2020-10-14 02:40:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28285 states. [2020-10-14 02:40:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28285 states to 28285 states and 32278 transitions. [2020-10-14 02:40:44,636 INFO L78 Accepts]: Start accepts. Automaton has 28285 states and 32278 transitions. Word has length 623 [2020-10-14 02:40:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:44,637 INFO L479 AbstractCegarLoop]: Abstraction has 28285 states and 32278 transitions. [2020-10-14 02:40:44,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 28285 states and 32278 transitions. [2020-10-14 02:40:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-14 02:40:44,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:44,658 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:44,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 02:40:44,659 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:44,659 INFO L82 PathProgramCache]: Analyzing trace with hash -658653256, now seen corresponding path program 1 times [2020-10-14 02:40:44,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:44,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841143850] [2020-10-14 02:40:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 646 [2020-10-14 02:40:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 02:40:49,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:40:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:40:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:49,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-14 02:40:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:50,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-14 02:40:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:40:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 02:40:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:50,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:40:50,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 219 proven. 299 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-10-14 02:40:50,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841143850] [2020-10-14 02:40:50,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:50,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:50,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479081117] [2020-10-14 02:40:50,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:50,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:50,683 INFO L87 Difference]: Start difference. First operand 28285 states and 32278 transitions. Second operand 7 states. [2020-10-14 02:40:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:53,657 INFO L93 Difference]: Finished difference Result 51618 states and 58992 transitions. [2020-10-14 02:40:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:40:53,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 628 [2020-10-14 02:40:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:53,708 INFO L225 Difference]: With dead ends: 51618 [2020-10-14 02:40:53,709 INFO L226 Difference]: Without dead ends: 30067 [2020-10-14 02:40:53,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30067 states. [2020-10-14 02:40:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30067 to 29245. [2020-10-14 02:40:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29245 states. [2020-10-14 02:40:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29245 states to 29245 states and 33291 transitions. [2020-10-14 02:40:54,066 INFO L78 Accepts]: Start accepts. Automaton has 29245 states and 33291 transitions. Word has length 628 [2020-10-14 02:40:54,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:54,066 INFO L479 AbstractCegarLoop]: Abstraction has 29245 states and 33291 transitions. [2020-10-14 02:40:54,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 29245 states and 33291 transitions. [2020-10-14 02:40:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2020-10-14 02:40:54,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:54,089 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:54,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 02:40:54,089 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash -593596642, now seen corresponding path program 1 times [2020-10-14 02:40:54,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:54,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029408850] [2020-10-14 02:40:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-14 02:40:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 02:40:59,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 02:40:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:40:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:59,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:59,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:40:59,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:40:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 02:40:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:59,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:40:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:59,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-14 02:40:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:59,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:59,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:40:59,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-14 02:40:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 02:40:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-14 02:40:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:59,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:59,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:59,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 219 proven. 299 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-10-14 02:40:59,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029408850] [2020-10-14 02:40:59,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:59,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:59,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285281979] [2020-10-14 02:40:59,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:59,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:59,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:59,947 INFO L87 Difference]: Start difference. First operand 29245 states and 33291 transitions. Second operand 7 states. [2020-10-14 02:41:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:03,916 INFO L93 Difference]: Finished difference Result 53416 states and 60836 transitions. [2020-10-14 02:41:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:41:03,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 640 [2020-10-14 02:41:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:03,968 INFO L225 Difference]: With dead ends: 53416 [2020-10-14 02:41:03,969 INFO L226 Difference]: Without dead ends: 29344 [2020-10-14 02:41:03,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29344 states. [2020-10-14 02:41:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29344 to 28870. [2020-10-14 02:41:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28870 states. [2020-10-14 02:41:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28870 states to 28870 states and 31874 transitions. [2020-10-14 02:41:04,578 INFO L78 Accepts]: Start accepts. Automaton has 28870 states and 31874 transitions. Word has length 640 [2020-10-14 02:41:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:04,578 INFO L479 AbstractCegarLoop]: Abstraction has 28870 states and 31874 transitions. [2020-10-14 02:41:04,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28870 states and 31874 transitions. [2020-10-14 02:41:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-14 02:41:04,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:04,602 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 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 02:41:04,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 02:41:04,602 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1813397965, now seen corresponding path program 1 times [2020-10-14 02:41:04,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:04,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346410911] [2020-10-14 02:41:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 02:41:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:41:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:09,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 02:41:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:41:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:10,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:41:10,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-14 02:41:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:10,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:10,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:41:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:10,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:41:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:10,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-14 02:41:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:10,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-14 02:41:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:10,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:10,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 02:41:10,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:10,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 219 proven. 299 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-10-14 02:41:10,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346410911] [2020-10-14 02:41:10,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:10,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:10,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141599478] [2020-10-14 02:41:10,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:10,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:10,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:10,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:10,768 INFO L87 Difference]: Start difference. First operand 28870 states and 31874 transitions. Second operand 7 states. [2020-10-14 02:41:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:14,367 INFO L93 Difference]: Finished difference Result 52268 states and 57767 transitions. [2020-10-14 02:41:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:41:14,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 644 [2020-10-14 02:41:14,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:14,416 INFO L225 Difference]: With dead ends: 52268 [2020-10-14 02:41:14,416 INFO L226 Difference]: Without dead ends: 27002 [2020-10-14 02:41:14,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:41:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27002 states. [2020-10-14 02:41:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27002 to 25578. [2020-10-14 02:41:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25578 states. [2020-10-14 02:41:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25578 states to 25578 states and 27639 transitions. [2020-10-14 02:41:14,931 INFO L78 Accepts]: Start accepts. Automaton has 25578 states and 27639 transitions. Word has length 644 [2020-10-14 02:41:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:14,931 INFO L479 AbstractCegarLoop]: Abstraction has 25578 states and 27639 transitions. [2020-10-14 02:41:14,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 25578 states and 27639 transitions. [2020-10-14 02:41:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-14 02:41:14,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:14,951 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:14,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 02:41:14,951 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:14,952 INFO L82 PathProgramCache]: Analyzing trace with hash 789476123, now seen corresponding path program 1 times [2020-10-14 02:41:14,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:14,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714350923] [2020-10-14 02:41:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 703 [2020-10-14 02:41:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 02:41:20,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 310 [2020-10-14 02:41:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:41:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:20,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:20,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:20,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:20,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:41:20,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:41:20,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:20,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:41:20,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 02:41:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-14 02:41:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:41:20,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:41:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:41:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-14 02:41:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:20,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:41:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:20,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-14 02:41:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-14 02:41:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 387 proven. 168 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2020-10-14 02:41:20,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714350923] [2020-10-14 02:41:20,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:20,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:20,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414623178] [2020-10-14 02:41:20,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:20,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:20,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:20,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:20,813 INFO L87 Difference]: Start difference. First operand 25578 states and 27639 transitions. Second operand 7 states. [2020-10-14 02:41:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:23,300 INFO L93 Difference]: Finished difference Result 45867 states and 49583 transitions. [2020-10-14 02:41:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:41:23,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 683 [2020-10-14 02:41:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:23,363 INFO L225 Difference]: With dead ends: 45867 [2020-10-14 02:41:23,363 INFO L226 Difference]: Without dead ends: 26063 [2020-10-14 02:41:23,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26063 states. [2020-10-14 02:41:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26063 to 24828. [2020-10-14 02:41:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24828 states. [2020-10-14 02:41:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24828 states to 24828 states and 26770 transitions. [2020-10-14 02:41:23,652 INFO L78 Accepts]: Start accepts. Automaton has 24828 states and 26770 transitions. Word has length 683 [2020-10-14 02:41:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:23,653 INFO L479 AbstractCegarLoop]: Abstraction has 24828 states and 26770 transitions. [2020-10-14 02:41:23,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 24828 states and 26770 transitions. [2020-10-14 02:41:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2020-10-14 02:41:23,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:23,672 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:23,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 02:41:23,672 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1947981810, now seen corresponding path program 1 times [2020-10-14 02:41:23,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:23,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925462009] [2020-10-14 02:41:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 727 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:41:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:28,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:41:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 02:41:28,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:28,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:28,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:41:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:29,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:41:29,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:29,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:41:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:41:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:29,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 02:41:29,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:41:29,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:29,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:41:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-14 02:41:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:41:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-14 02:41:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:30,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-10-14 02:41:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:41:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:30,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 337 proven. 295 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2020-10-14 02:41:30,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925462009] [2020-10-14 02:41:30,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:30,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:30,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948743528] [2020-10-14 02:41:30,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:30,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:30,352 INFO L87 Difference]: Start difference. First operand 24828 states and 26770 transitions. Second operand 7 states. [2020-10-14 02:41:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:33,814 INFO L93 Difference]: Finished difference Result 45557 states and 50239 transitions. [2020-10-14 02:41:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:41:33,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 707 [2020-10-14 02:41:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:33,863 INFO L225 Difference]: With dead ends: 45557 [2020-10-14 02:41:33,863 INFO L226 Difference]: Without dead ends: 25727 [2020-10-14 02:41:33,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25727 states. [2020-10-14 02:41:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25727 to 25216. [2020-10-14 02:41:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25216 states. [2020-10-14 02:41:34,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25216 states to 25216 states and 27184 transitions. [2020-10-14 02:41:34,207 INFO L78 Accepts]: Start accepts. Automaton has 25216 states and 27184 transitions. Word has length 707 [2020-10-14 02:41:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:34,208 INFO L479 AbstractCegarLoop]: Abstraction has 25216 states and 27184 transitions. [2020-10-14 02:41:34,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 25216 states and 27184 transitions. [2020-10-14 02:41:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2020-10-14 02:41:34,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:34,227 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 02:41:34,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 02:41:34,228 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:34,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1184455473, now seen corresponding path program 1 times [2020-10-14 02:41:34,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:34,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940507983] [2020-10-14 02:41:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 760 [2020-10-14 02:41:39,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:41:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 02:41:39,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:41:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:41:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:41:39,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:41:39,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:41:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:41:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:41:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:41:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:41:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-14 02:41:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-14 02:41:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:41:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-10-14 02:41:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 355 proven. 291 refuted. 0 times theorem prover too weak. 1073 trivial. 0 not checked. [2020-10-14 02:41:40,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940507983] [2020-10-14 02:41:40,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:40,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:40,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156797907] [2020-10-14 02:41:40,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:40,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:40,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:40,323 INFO L87 Difference]: Start difference. First operand 25216 states and 27184 transitions. Second operand 7 states.