/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:54:09,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:54:09,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:54:09,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:54:09,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:54:09,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:54:09,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:54:09,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:54:09,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:54:09,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:54:09,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:54:09,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:54:09,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:54:09,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:54:09,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:54:09,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:54:09,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:54:09,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:54:09,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:54:09,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:54:09,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:54:09,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:54:09,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:54:09,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:54:09,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:54:09,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:54:09,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:54:09,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:54:09,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:54:09,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:54:09,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:54:09,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:54:09,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:54:09,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:54:09,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:54:09,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:54:09,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:54:09,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:54:09,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:54:09,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:54:09,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:54:09,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:54:09,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:54:09,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:54:09,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:54:09,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:54:09,713 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:54:09,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:54:09,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:54:09,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:54:09,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:54:09,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:54:09,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:54:09,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:54:09,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:54:09,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:54:09,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:54:09,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:54:09,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:54:09,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:54:09,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:54:09,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:54:09,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:54:09,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:54:09,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:54:09,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:54:09,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:54:09,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:54:09,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:54:09,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:54:09,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:54:09,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:54:10,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:54:10,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:54:10,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:54:10,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:54:10,028 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:54:10,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-14 00:54:10,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d1429e12/9dd30b36d2fd4755bd2fa24ef6440664/FLAG810331bc5 [2020-10-14 00:54:10,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:54:10,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-14 00:54:10,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d1429e12/9dd30b36d2fd4755bd2fa24ef6440664/FLAG810331bc5 [2020-10-14 00:54:10,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d1429e12/9dd30b36d2fd4755bd2fa24ef6440664 [2020-10-14 00:54:10,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:54:10,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:54:10,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:54:10,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:54:10,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:54:10,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:54:10" (1/1) ... [2020-10-14 00:54:10,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:10, skipping insertion in model container [2020-10-14 00:54:10,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:54:10" (1/1) ... [2020-10-14 00:54:10,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:54:11,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:54:11,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:54:11,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:54:12,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:54:12,203 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:54:12,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12 WrapperNode [2020-10-14 00:54:12,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:54:12,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:54:12,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:54:12,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:54:12,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... [2020-10-14 00:54:12,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:54:12,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:54:12,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:54:12,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:54:12,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:54:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:54:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:54:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:54:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:54:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:54:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:54:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:54:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:54:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:54:14,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:54:14,321 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:54:14,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:54:14 BoogieIcfgContainer [2020-10-14 00:54:14,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:54:14,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:54:14,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:54:14,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:54:14,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:54:10" (1/3) ... [2020-10-14 00:54:14,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:54:14, skipping insertion in model container [2020-10-14 00:54:14,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:12" (2/3) ... [2020-10-14 00:54:14,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:54:14, skipping insertion in model container [2020-10-14 00:54:14,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:54:14" (3/3) ... [2020-10-14 00:54:14,337 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2020-10-14 00:54:14,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:54:14,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:54:14,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:54:14,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:54:14,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:54:14,406 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:54:14,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:54:14,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:54:14,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:54:14,407 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:54:14,407 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:54:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:54:14,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 00:54:14,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:14,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:14,454 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:14,463 INFO L82 PathProgramCache]: Analyzing trace with hash -148239995, now seen corresponding path program 1 times [2020-10-14 00:54:14,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:14,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899171141] [2020-10-14 00:54:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:15,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:19,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:19,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 00:54:19,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4672 [2020-10-14 00:54:19,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:19,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:54:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:54:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 00:54:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:54:19,990 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:54:20,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:20,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:54:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:20,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899171141] [2020-10-14 00:54:20,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:54:20,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:54:20,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278243365] [2020-10-14 00:54:20,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:54:20,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:20,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:54:20,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:54:20,155 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:54:20,351 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:22,983 INFO L93 Difference]: Finished difference Result 858 states and 1518 transitions. [2020-10-14 00:54:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:22,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 00:54:22,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:23,006 INFO L225 Difference]: With dead ends: 858 [2020-10-14 00:54:23,007 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 00:54:23,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 00:54:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 465. [2020-10-14 00:54:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-14 00:54:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 743 transitions. [2020-10-14 00:54:23,105 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 743 transitions. Word has length 150 [2020-10-14 00:54:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:23,106 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 743 transitions. [2020-10-14 00:54:23,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:54:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 743 transitions. [2020-10-14 00:54:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 00:54:23,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:23,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:23,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:54:23,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:23,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1291531554, now seen corresponding path program 1 times [2020-10-14 00:54:23,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:23,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007804388] [2020-10-14 00:54:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:25,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 00:54:25,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-10-14 00:54:25,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:25,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:54:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:54:25,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:25,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:25,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:25,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:54:25,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:25,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:25,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:54:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:54:25,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:25,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:54:25,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:25,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007804388] [2020-10-14 00:54:25,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:25,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:25,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909711402] [2020-10-14 00:54:25,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:25,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:25,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:25,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:25,608 INFO L87 Difference]: Start difference. First operand 465 states and 743 transitions. Second operand 5 states. [2020-10-14 00:54:25,739 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:54:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:27,963 INFO L93 Difference]: Finished difference Result 1360 states and 2212 transitions. [2020-10-14 00:54:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:27,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 00:54:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:27,973 INFO L225 Difference]: With dead ends: 1360 [2020-10-14 00:54:27,973 INFO L226 Difference]: Without dead ends: 901 [2020-10-14 00:54:27,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-10-14 00:54:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 883. [2020-10-14 00:54:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-14 00:54:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1395 transitions. [2020-10-14 00:54:28,025 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1395 transitions. Word has length 159 [2020-10-14 00:54:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:28,026 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1395 transitions. [2020-10-14 00:54:28,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1395 transitions. [2020-10-14 00:54:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 00:54:28,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:28,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:28,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:54:28,033 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:28,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1098345218, now seen corresponding path program 1 times [2020-10-14 00:54:28,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:28,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356718144] [2020-10-14 00:54:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:28,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 00:54:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4064 [2020-10-14 00:54:32,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:32,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:54:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:54:32,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:32,401 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:32,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:32,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:32,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:32,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:32,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:54:32,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:54:32,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:32,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:54:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:32,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356718144] [2020-10-14 00:54:32,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:32,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:32,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75319108] [2020-10-14 00:54:32,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:32,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:32,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:32,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:32,660 INFO L87 Difference]: Start difference. First operand 883 states and 1395 transitions. Second operand 5 states. [2020-10-14 00:54:32,797 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:35,341 INFO L93 Difference]: Finished difference Result 2614 states and 4199 transitions. [2020-10-14 00:54:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:35,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-14 00:54:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:35,364 INFO L225 Difference]: With dead ends: 2614 [2020-10-14 00:54:35,364 INFO L226 Difference]: Without dead ends: 1737 [2020-10-14 00:54:35,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-10-14 00:54:35,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1523. [2020-10-14 00:54:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-10-14 00:54:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2322 transitions. [2020-10-14 00:54:35,425 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2322 transitions. Word has length 161 [2020-10-14 00:54:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:35,426 INFO L479 AbstractCegarLoop]: Abstraction has 1523 states and 2322 transitions. [2020-10-14 00:54:35,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2322 transitions. [2020-10-14 00:54:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 00:54:35,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:35,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:35,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:54:35,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:35,433 INFO L82 PathProgramCache]: Analyzing trace with hash 763506117, now seen corresponding path program 1 times [2020-10-14 00:54:35,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:35,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48683477] [2020-10-14 00:54:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:37,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:37,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 00:54:37,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-10-14 00:54:37,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:37,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:54:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:54:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:37,436 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:37,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:37,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:54:37,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:37,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:37,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:54:37,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:54:37,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:37,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:54:37,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:37,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48683477] [2020-10-14 00:54:37,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:37,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:54:37,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953784675] [2020-10-14 00:54:37,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:54:37,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:54:37,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:37,638 INFO L87 Difference]: Start difference. First operand 1523 states and 2322 transitions. Second operand 6 states. [2020-10-14 00:54:37,897 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:38,034 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:42,088 INFO L93 Difference]: Finished difference Result 5137 states and 8021 transitions. [2020-10-14 00:54:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:54:42,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-14 00:54:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:42,127 INFO L225 Difference]: With dead ends: 5137 [2020-10-14 00:54:42,129 INFO L226 Difference]: Without dead ends: 3620 [2020-10-14 00:54:42,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:54:42,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2020-10-14 00:54:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3199. [2020-10-14 00:54:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 00:54:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4884 transitions. [2020-10-14 00:54:42,287 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4884 transitions. Word has length 168 [2020-10-14 00:54:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:42,287 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 4884 transitions. [2020-10-14 00:54:42,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:54:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4884 transitions. [2020-10-14 00:54:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 00:54:42,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:42,300 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:42,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:54:42,301 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:42,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:42,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1414062904, now seen corresponding path program 1 times [2020-10-14 00:54:42,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:42,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201961330] [2020-10-14 00:54:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:42,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 00:54:47,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:54:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-14 00:54:47,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:54:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:54:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:47,591 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:47,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:54:47,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:54:47,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:54:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:54:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:54:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:54:47,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:54:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:47,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:54:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 00:54:47,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:54:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:54:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:54:47,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201961330] [2020-10-14 00:54:47,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:47,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:54:47,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000198191] [2020-10-14 00:54:47,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:54:47,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:47,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:54:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:47,856 INFO L87 Difference]: Start difference. First operand 3199 states and 4884 transitions. Second operand 6 states. [2020-10-14 00:54:47,982 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:49,741 INFO L93 Difference]: Finished difference Result 6395 states and 9788 transitions. [2020-10-14 00:54:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:49,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-10-14 00:54:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:49,761 INFO L225 Difference]: With dead ends: 6395 [2020-10-14 00:54:49,761 INFO L226 Difference]: Without dead ends: 3202 [2020-10-14 00:54:49,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2020-10-14 00:54:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3198. [2020-10-14 00:54:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3198 states. [2020-10-14 00:54:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4882 transitions. [2020-10-14 00:54:49,876 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4882 transitions. Word has length 196 [2020-10-14 00:54:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:49,877 INFO L479 AbstractCegarLoop]: Abstraction has 3198 states and 4882 transitions. [2020-10-14 00:54:49,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:54:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4882 transitions. [2020-10-14 00:54:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 00:54:49,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:49,887 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:49,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:54:49,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:49,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1356396290, now seen corresponding path program 1 times [2020-10-14 00:54:49,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:49,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988967921] [2020-10-14 00:54:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:54,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:54,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 00:54:54,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:54:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 00:54:54,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:54,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 00:54:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:54:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:55,132 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:55,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:55,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:55,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:55,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:55,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:54:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:55,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:55,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:54:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 00:54:55,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988967921] [2020-10-14 00:54:55,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:55,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:55,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482370240] [2020-10-14 00:54:55,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:55,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:55,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:55,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:55,337 INFO L87 Difference]: Start difference. First operand 3198 states and 4882 transitions. Second operand 5 states. [2020-10-14 00:54:55,533 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:57,875 INFO L93 Difference]: Finished difference Result 9330 states and 14727 transitions. [2020-10-14 00:54:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:57,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-14 00:54:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:57,917 INFO L225 Difference]: With dead ends: 9330 [2020-10-14 00:54:57,917 INFO L226 Difference]: Without dead ends: 6138 [2020-10-14 00:54:57,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2020-10-14 00:54:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 5717. [2020-10-14 00:54:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5717 states. [2020-10-14 00:54:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 8654 transitions. [2020-10-14 00:54:58,118 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 8654 transitions. Word has length 195 [2020-10-14 00:54:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:58,118 INFO L479 AbstractCegarLoop]: Abstraction has 5717 states and 8654 transitions. [2020-10-14 00:54:58,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 8654 transitions. [2020-10-14 00:54:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 00:54:58,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:58,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:58,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:54:58,137 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 577775424, now seen corresponding path program 1 times [2020-10-14 00:54:58,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:58,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879593522] [2020-10-14 00:54:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:03,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:03,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 00:55:03,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:55:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 00:55:03,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:03,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:55:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:55:03,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:03,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:03,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:03,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:03,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:55:03,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:03,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:55:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:55:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:03,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:03,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 00:55:03,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:03,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 00:55:03,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:03,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:03,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:03,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:03,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:55:03,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:55:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:03,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:55:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:55:03,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:03,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:55:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:55:03,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879593522] [2020-10-14 00:55:03,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:03,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:03,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006442178] [2020-10-14 00:55:03,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:03,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:03,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:03,608 INFO L87 Difference]: Start difference. First operand 5717 states and 8654 transitions. Second operand 7 states. [2020-10-14 00:55:03,934 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:04,062 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:08,333 INFO L93 Difference]: Finished difference Result 14177 states and 22950 transitions. [2020-10-14 00:55:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:08,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-14 00:55:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:08,388 INFO L225 Difference]: With dead ends: 14177 [2020-10-14 00:55:08,389 INFO L226 Difference]: Without dead ends: 8466 [2020-10-14 00:55:08,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2020-10-14 00:55:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 8353. [2020-10-14 00:55:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8353 states. [2020-10-14 00:55:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 12218 transitions. [2020-10-14 00:55:08,746 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 12218 transitions. Word has length 212 [2020-10-14 00:55:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:08,747 INFO L479 AbstractCegarLoop]: Abstraction has 8353 states and 12218 transitions. [2020-10-14 00:55:08,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 12218 transitions. [2020-10-14 00:55:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 00:55:08,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:08,773 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:08,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:55:08,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:08,774 INFO L82 PathProgramCache]: Analyzing trace with hash 593528377, now seen corresponding path program 1 times [2020-10-14 00:55:08,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:08,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689597693] [2020-10-14 00:55:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:13,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 00:55:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:55:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:55:13,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:13,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 00:55:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:55:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:13,998 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:55:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:55:14,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:55:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:14,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:55:14,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:55:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:55:14,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:55:14,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:55:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-14 00:55:14,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689597693] [2020-10-14 00:55:14,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:14,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:55:14,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88027582] [2020-10-14 00:55:14,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:55:14,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:55:14,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:14,209 INFO L87 Difference]: Start difference. First operand 8353 states and 12218 transitions. Second operand 6 states. [2020-10-14 00:55:14,404 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:14,946 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:17,890 INFO L93 Difference]: Finished difference Result 25524 states and 38066 transitions. [2020-10-14 00:55:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:55:17,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2020-10-14 00:55:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:17,981 INFO L225 Difference]: With dead ends: 25524 [2020-10-14 00:55:17,981 INFO L226 Difference]: Without dead ends: 19727 [2020-10-14 00:55:18,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:55:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19727 states. [2020-10-14 00:55:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19727 to 17603. [2020-10-14 00:55:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17603 states. [2020-10-14 00:55:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 26502 transitions. [2020-10-14 00:55:18,625 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 26502 transitions. Word has length 212 [2020-10-14 00:55:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:18,626 INFO L479 AbstractCegarLoop]: Abstraction has 17603 states and 26502 transitions. [2020-10-14 00:55:18,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:55:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 26502 transitions. [2020-10-14 00:55:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 00:55:18,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:18,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:18,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:55:18,689 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash 57881904, now seen corresponding path program 1 times [2020-10-14 00:55:18,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:18,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871751993] [2020-10-14 00:55:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:22,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 00:55:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3471 [2020-10-14 00:55:22,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:22,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:55:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:55:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:55:22,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:22,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:22,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:22,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:55:22,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:55:22,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:22,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:55:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:55:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:22,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:55:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 00:55:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:22,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:55:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:55:22,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871751993] [2020-10-14 00:55:22,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:22,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:22,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983357971] [2020-10-14 00:55:22,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:22,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:22,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:22,953 INFO L87 Difference]: Start difference. First operand 17603 states and 26502 transitions. Second operand 7 states. [2020-10-14 00:55:23,239 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:23,538 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:26,632 INFO L93 Difference]: Finished difference Result 36105 states and 63514 transitions. [2020-10-14 00:55:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:26,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-14 00:55:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:26,759 INFO L225 Difference]: With dead ends: 36105 [2020-10-14 00:55:26,760 INFO L226 Difference]: Without dead ends: 18508 [2020-10-14 00:55:26,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18508 states. [2020-10-14 00:55:27,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18508 to 17269. [2020-10-14 00:55:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17269 states. [2020-10-14 00:55:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17269 states to 17269 states and 24833 transitions. [2020-10-14 00:55:27,732 INFO L78 Accepts]: Start accepts. Automaton has 17269 states and 24833 transitions. Word has length 282 [2020-10-14 00:55:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:27,733 INFO L479 AbstractCegarLoop]: Abstraction has 17269 states and 24833 transitions. [2020-10-14 00:55:27,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 17269 states and 24833 transitions. [2020-10-14 00:55:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 00:55:27,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:27,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:27,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:55:27,777 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1694112724, now seen corresponding path program 1 times [2020-10-14 00:55:27,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:27,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35789138] [2020-10-14 00:55:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:30,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:30,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 00:55:30,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2717 [2020-10-14 00:55:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:30,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:55:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:55:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:30,738 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:30,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:30,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:30,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:55:30,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:30,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:30,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:30,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:30,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:55:30,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:55:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:55:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:31,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:31,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:55:31,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:55:31,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35789138] [2020-10-14 00:55:31,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:31,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:31,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670982005] [2020-10-14 00:55:31,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:31,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:31,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:31,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:31,212 INFO L87 Difference]: Start difference. First operand 17269 states and 24833 transitions. Second operand 7 states. [2020-10-14 00:55:31,342 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:32,011 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:34,965 INFO L93 Difference]: Finished difference Result 34638 states and 51011 transitions. [2020-10-14 00:55:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:34,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 00:55:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:35,023 INFO L225 Difference]: With dead ends: 34638 [2020-10-14 00:55:35,024 INFO L226 Difference]: Without dead ends: 17375 [2020-10-14 00:55:35,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17375 states. [2020-10-14 00:55:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17375 to 17046. [2020-10-14 00:55:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17046 states. [2020-10-14 00:55:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17046 states to 17046 states and 21463 transitions. [2020-10-14 00:55:35,475 INFO L78 Accepts]: Start accepts. Automaton has 17046 states and 21463 transitions. Word has length 284 [2020-10-14 00:55:35,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:35,476 INFO L479 AbstractCegarLoop]: Abstraction has 17046 states and 21463 transitions. [2020-10-14 00:55:35,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 17046 states and 21463 transitions. [2020-10-14 00:55:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 00:55:35,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:35,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:35,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:55:35,507 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:35,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1575433596, now seen corresponding path program 1 times [2020-10-14 00:55:35,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:35,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317976004] [2020-10-14 00:55:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:35,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:38,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 00:55:40,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:55:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-14 00:55:40,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 00:55:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 00:55:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:40,938 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:41,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:41,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:55:41,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:55:41,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:41,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:55:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 00:55:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 00:55:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:41,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 00:55:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:55:41,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317976004] [2020-10-14 00:55:41,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:41,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:41,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54332676] [2020-10-14 00:55:41,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:41,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:41,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:41,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:41,314 INFO L87 Difference]: Start difference. First operand 17046 states and 21463 transitions. Second operand 5 states. [2020-10-14 00:55:41,559 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:44,231 INFO L93 Difference]: Finished difference Result 42898 states and 54475 transitions. [2020-10-14 00:55:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:44,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-14 00:55:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:44,302 INFO L225 Difference]: With dead ends: 42898 [2020-10-14 00:55:44,302 INFO L226 Difference]: Without dead ends: 25858 [2020-10-14 00:55:44,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25858 states. [2020-10-14 00:55:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25858 to 25417. [2020-10-14 00:55:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25417 states. [2020-10-14 00:55:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25417 states to 25417 states and 31768 transitions. [2020-10-14 00:55:44,958 INFO L78 Accepts]: Start accepts. Automaton has 25417 states and 31768 transitions. Word has length 311 [2020-10-14 00:55:44,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:44,959 INFO L479 AbstractCegarLoop]: Abstraction has 25417 states and 31768 transitions. [2020-10-14 00:55:44,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 25417 states and 31768 transitions. [2020-10-14 00:55:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 00:55:45,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:45,003 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:45,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:55:45,004 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash 854173490, now seen corresponding path program 1 times [2020-10-14 00:55:45,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:45,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953157029] [2020-10-14 00:55:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:45,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 00:55:50,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:55:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 00:55:50,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 00:55:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 00:55:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,286 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:50,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:55:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:55:50,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:55:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:55:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:55:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:50,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:50,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:55:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 00:55:50,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:50,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:55:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 00:55:50,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953157029] [2020-10-14 00:55:50,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:50,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:50,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623693898] [2020-10-14 00:55:50,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:50,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:50,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:50,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:50,789 INFO L87 Difference]: Start difference. First operand 25417 states and 31768 transitions. Second operand 7 states. [2020-10-14 00:55:50,926 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:53,058 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:54,093 INFO L93 Difference]: Finished difference Result 51115 states and 65489 transitions. [2020-10-14 00:55:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:54,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-14 00:55:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:54,171 INFO L225 Difference]: With dead ends: 51115 [2020-10-14 00:55:54,172 INFO L226 Difference]: Without dead ends: 25704 [2020-10-14 00:55:54,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25704 states. [2020-10-14 00:55:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25704 to 22567. [2020-10-14 00:55:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22567 states. [2020-10-14 00:55:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22567 states to 22567 states and 27348 transitions. [2020-10-14 00:55:54,848 INFO L78 Accepts]: Start accepts. Automaton has 22567 states and 27348 transitions. Word has length 318 [2020-10-14 00:55:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:54,849 INFO L479 AbstractCegarLoop]: Abstraction has 22567 states and 27348 transitions. [2020-10-14 00:55:54,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 22567 states and 27348 transitions. [2020-10-14 00:55:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 00:55:54,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:54,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:54,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:55:54,886 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:54,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1966935527, now seen corresponding path program 1 times [2020-10-14 00:55:54,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:54,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744489859] [2020-10-14 00:55:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 00:56:00,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:56:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 00:56:00,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:56:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:56:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:00,173 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:00,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:00,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:56:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:56:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:56:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:56:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:56:00,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 00:56:00,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:56:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:56:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:56:00,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:56:00,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:00,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:56:00,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:00,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:00,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:56:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:56:00,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 00:56:00,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:56:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 197 proven. 35 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 00:56:00,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744489859] [2020-10-14 00:56:00,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:00,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:00,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344600077] [2020-10-14 00:56:00,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:00,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:00,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:00,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:00,859 INFO L87 Difference]: Start difference. First operand 22567 states and 27348 transitions. Second operand 7 states. [2020-10-14 00:56:01,133 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:01,579 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:56:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:04,836 INFO L93 Difference]: Finished difference Result 48125 states and 61300 transitions. [2020-10-14 00:56:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:04,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-14 00:56:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:04,922 INFO L225 Difference]: With dead ends: 48125 [2020-10-14 00:56:04,922 INFO L226 Difference]: Without dead ends: 25564 [2020-10-14 00:56:04,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25564 states. [2020-10-14 00:56:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25564 to 24367. [2020-10-14 00:56:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24367 states. [2020-10-14 00:56:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24367 states to 24367 states and 29402 transitions. [2020-10-14 00:56:05,555 INFO L78 Accepts]: Start accepts. Automaton has 24367 states and 29402 transitions. Word has length 335 [2020-10-14 00:56:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:05,556 INFO L479 AbstractCegarLoop]: Abstraction has 24367 states and 29402 transitions. [2020-10-14 00:56:05,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 24367 states and 29402 transitions. [2020-10-14 00:56:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 00:56:05,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:05,595 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:05,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:56:05,595 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:05,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1871443197, now seen corresponding path program 1 times [2020-10-14 00:56:05,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:05,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923961378] [2020-10-14 00:56:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:10,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-14 00:56:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:56:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-14 00:56:10,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:10,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:56:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:56:10,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:10,959 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:56:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:56:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:56:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 00:56:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:11,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:11,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:11,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:56:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:56:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 00:56:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:11,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:56:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 212 proven. 35 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 00:56:11,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923961378] [2020-10-14 00:56:11,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:11,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:11,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393019250] [2020-10-14 00:56:11,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:11,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:11,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:11,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:11,423 INFO L87 Difference]: Start difference. First operand 24367 states and 29402 transitions. Second operand 7 states. [2020-10-14 00:56:11,560 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:13,132 INFO L93 Difference]: Finished difference Result 43742 states and 52668 transitions. [2020-10-14 00:56:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:56:13,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-14 00:56:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:13,180 INFO L225 Difference]: With dead ends: 43742 [2020-10-14 00:56:13,181 INFO L226 Difference]: Without dead ends: 19602 [2020-10-14 00:56:13,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:56:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19602 states. [2020-10-14 00:56:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19602 to 19582. [2020-10-14 00:56:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19582 states. [2020-10-14 00:56:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19582 states to 19582 states and 22862 transitions. [2020-10-14 00:56:13,605 INFO L78 Accepts]: Start accepts. Automaton has 19582 states and 22862 transitions. Word has length 349 [2020-10-14 00:56:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:13,605 INFO L479 AbstractCegarLoop]: Abstraction has 19582 states and 22862 transitions. [2020-10-14 00:56:13,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand 19582 states and 22862 transitions. [2020-10-14 00:56:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-14 00:56:13,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:13,634 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:56:13,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:56:13,634 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1282541788, now seen corresponding path program 1 times [2020-10-14 00:56:13,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:13,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112871320] [2020-10-14 00:56:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:18,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-14 00:56:18,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:56:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:18,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:18,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:18,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:18,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:19,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:19,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:56:19,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:19,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:56:19,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:19,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:19,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:56:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:56:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:19,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:56:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:19,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:19,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:56:19,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:56:19,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:19,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 00:56:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:19,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:19,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:56:19,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:56:19,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:19,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:56:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 00:56:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:56:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 00:56:19,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112871320] [2020-10-14 00:56:19,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:19,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:19,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172647096] [2020-10-14 00:56:19,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:19,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:19,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:19,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:19,587 INFO L87 Difference]: Start difference. First operand 19582 states and 22862 transitions. Second operand 7 states. [2020-10-14 00:56:19,774 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:19,976 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:23,722 INFO L93 Difference]: Finished difference Result 40462 states and 48951 transitions. [2020-10-14 00:56:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:23,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 416 [2020-10-14 00:56:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:23,789 INFO L225 Difference]: With dead ends: 40462 [2020-10-14 00:56:23,790 INFO L226 Difference]: Without dead ends: 21123 [2020-10-14 00:56:23,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21123 states. [2020-10-14 00:56:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21123 to 20500. [2020-10-14 00:56:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20500 states. [2020-10-14 00:56:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20500 states to 20500 states and 23769 transitions. [2020-10-14 00:56:24,255 INFO L78 Accepts]: Start accepts. Automaton has 20500 states and 23769 transitions. Word has length 416 [2020-10-14 00:56:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:24,256 INFO L479 AbstractCegarLoop]: Abstraction has 20500 states and 23769 transitions. [2020-10-14 00:56:24,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 20500 states and 23769 transitions. [2020-10-14 00:56:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-14 00:56:24,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:24,293 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:24,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:56:24,293 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:24,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:24,294 INFO L82 PathProgramCache]: Analyzing trace with hash -553392724, now seen corresponding path program 1 times [2020-10-14 00:56:24,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:24,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352814709] [2020-10-14 00:56:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-14 00:56:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:56:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:56:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 00:56:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 00:56:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:29,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:29,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:56:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:56:29,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:56:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:56:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:56:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:56:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:56:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 00:56:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:30,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:56:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 00:56:30,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:30,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 00:56:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:30,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-14 00:56:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:30,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:30,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:30,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 503 proven. 122 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-14 00:56:30,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352814709] [2020-10-14 00:56:30,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:30,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:30,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848341026] [2020-10-14 00:56:30,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:30,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:30,431 INFO L87 Difference]: Start difference. First operand 20500 states and 23769 transitions. Second operand 7 states. [2020-10-14 00:56:30,638 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:31,169 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:35,499 INFO L93 Difference]: Finished difference Result 69136 states and 82704 transitions. [2020-10-14 00:56:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:35,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-14 00:56:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:35,607 INFO L225 Difference]: With dead ends: 69136 [2020-10-14 00:56:35,607 INFO L226 Difference]: Without dead ends: 50020 [2020-10-14 00:56:35,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50020 states. [2020-10-14 00:56:36,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50020 to 49131. [2020-10-14 00:56:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49131 states. [2020-10-14 00:56:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49131 states to 49131 states and 58849 transitions. [2020-10-14 00:56:36,680 INFO L78 Accepts]: Start accepts. Automaton has 49131 states and 58849 transitions. Word has length 534 [2020-10-14 00:56:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:36,681 INFO L479 AbstractCegarLoop]: Abstraction has 49131 states and 58849 transitions. [2020-10-14 00:56:36,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 49131 states and 58849 transitions. [2020-10-14 00:56:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-14 00:56:36,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:36,771 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 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 00:56:36,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:56:36,771 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:36,771 INFO L82 PathProgramCache]: Analyzing trace with hash 375271740, now seen corresponding path program 1 times [2020-10-14 00:56:36,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:36,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722228519] [2020-10-14 00:56:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:41,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:41,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-14 00:56:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 00:56:41,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:41,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 00:56:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 00:56:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:42,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:42,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:42,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:42,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:42,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:42,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:56:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:42,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 00:56:42,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:42,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 00:56:42,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:42,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:56:42,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:42,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 00:56:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 00:56:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 00:56:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:56:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 552 proven. 122 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 00:56:43,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722228519] [2020-10-14 00:56:43,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:43,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:43,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364864198] [2020-10-14 00:56:43,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:43,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:43,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:43,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:43,421 INFO L87 Difference]: Start difference. First operand 49131 states and 58849 transitions. Second operand 7 states. [2020-10-14 00:56:43,548 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:56:45,320 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:46,689 INFO L93 Difference]: Finished difference Result 91357 states and 109890 transitions. [2020-10-14 00:56:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:46,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-14 00:56:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:46,808 INFO L225 Difference]: With dead ends: 91357 [2020-10-14 00:56:46,808 INFO L226 Difference]: Without dead ends: 54918 [2020-10-14 00:56:46,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54918 states. [2020-10-14 00:56:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54918 to 54838. [2020-10-14 00:56:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54838 states. [2020-10-14 00:56:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54838 states to 54838 states and 65335 transitions. [2020-10-14 00:56:47,899 INFO L78 Accepts]: Start accepts. Automaton has 54838 states and 65335 transitions. Word has length 560 [2020-10-14 00:56:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:47,900 INFO L479 AbstractCegarLoop]: Abstraction has 54838 states and 65335 transitions. [2020-10-14 00:56:47,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 54838 states and 65335 transitions. [2020-10-14 00:56:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-14 00:56:47,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:47,999 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:47,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:56:47,999 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:48,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1554434349, now seen corresponding path program 1 times [2020-10-14 00:56:48,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:48,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086569064] [2020-10-14 00:56:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:48,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:53,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-14 00:56:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:56:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:56:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-14 00:56:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 00:56:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:53,359 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:53,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:53,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:56:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:53,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:53,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:56:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:53,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:56:53,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 00:56:53,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:53,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:56:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:53,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:56:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 00:56:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:53,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:56:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 00:56:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 00:56:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-14 00:56:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:54,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:56:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 591 proven. 122 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-10-14 00:56:54,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086569064] [2020-10-14 00:56:54,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:54,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:54,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547564745] [2020-10-14 00:56:54,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:54,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:54,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:54,649 INFO L87 Difference]: Start difference. First operand 54838 states and 65335 transitions. Second operand 7 states. [2020-10-14 00:56:54,987 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:56,016 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:57:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:00,110 INFO L93 Difference]: Finished difference Result 115712 states and 144202 transitions. [2020-10-14 00:57:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:57:00,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-14 00:57:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:00,308 INFO L225 Difference]: With dead ends: 115712 [2020-10-14 00:57:00,309 INFO L226 Difference]: Without dead ends: 63993 [2020-10-14 00:57:00,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:57:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63993 states. [2020-10-14 00:57:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63993 to 61866. [2020-10-14 00:57:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61866 states. [2020-10-14 00:57:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61866 states to 61866 states and 72776 transitions. [2020-10-14 00:57:02,031 INFO L78 Accepts]: Start accepts. Automaton has 61866 states and 72776 transitions. Word has length 578 [2020-10-14 00:57:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:02,032 INFO L479 AbstractCegarLoop]: Abstraction has 61866 states and 72776 transitions. [2020-10-14 00:57:02,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 61866 states and 72776 transitions. [2020-10-14 00:57:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2020-10-14 00:57:02,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:02,145 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 00:57:02,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:57:02,146 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash -48069405, now seen corresponding path program 1 times [2020-10-14 00:57:02,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:02,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753169158] [2020-10-14 00:57:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:07,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-14 00:57:07,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:57:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 00:57:07,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:07,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-14 00:57:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:57:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:07,477 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:07,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:07,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:07,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:07,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:57:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:57:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:57:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:07,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:57:07,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:57:07,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:07,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:57:07,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 00:57:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:57:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-14 00:57:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:08,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:57:08,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 00:57:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:08,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-14 00:57:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-14 00:57:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:08,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:57:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 581 proven. 102 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2020-10-14 00:57:08,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753169158] [2020-10-14 00:57:08,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:08,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:08,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673228354] [2020-10-14 00:57:08,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:08,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:08,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:08,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:08,561 INFO L87 Difference]: Start difference. First operand 61866 states and 72776 transitions. Second operand 7 states. [2020-10-14 00:57:09,528 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:57:09,993 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:13,321 INFO L93 Difference]: Finished difference Result 116712 states and 144306 transitions. [2020-10-14 00:57:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:57:13,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 633 [2020-10-14 00:57:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:13,528 INFO L225 Difference]: With dead ends: 116712 [2020-10-14 00:57:13,528 INFO L226 Difference]: Without dead ends: 69095 [2020-10-14 00:57:13,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:57:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69095 states. [2020-10-14 00:57:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69095 to 67183. [2020-10-14 00:57:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67183 states. [2020-10-14 00:57:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67183 states to 67183 states and 78823 transitions. [2020-10-14 00:57:14,889 INFO L78 Accepts]: Start accepts. Automaton has 67183 states and 78823 transitions. Word has length 633 [2020-10-14 00:57:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:14,889 INFO L479 AbstractCegarLoop]: Abstraction has 67183 states and 78823 transitions. [2020-10-14 00:57:14,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 67183 states and 78823 transitions. [2020-10-14 00:57:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-14 00:57:15,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:15,002 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 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] [2020-10-14 00:57:15,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:57:15,003 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1643691293, now seen corresponding path program 1 times [2020-10-14 00:57:15,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:15,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921630109] [2020-10-14 00:57:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 656 [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:57:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-14 00:57:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 00:57:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:20,530 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:20,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:20,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:57:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:20,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:57:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:57:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:20,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:57:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:20,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:57:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-14 00:57:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:22,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:57:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 00:57:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 00:57:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-14 00:57:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:57:22,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 00:57:22,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:22,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:57:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 744 proven. 174 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 00:57:23,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921630109] [2020-10-14 00:57:23,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:23,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:23,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645810470] [2020-10-14 00:57:23,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:23,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:23,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:23,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:23,002 INFO L87 Difference]: Start difference. First operand 67183 states and 78823 transitions. Second operand 7 states. [2020-10-14 00:57:23,139 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:57:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:26,563 INFO L93 Difference]: Finished difference Result 135305 states and 160220 transitions. [2020-10-14 00:57:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:57:26,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 636 [2020-10-14 00:57:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:26,781 INFO L225 Difference]: With dead ends: 135305 [2020-10-14 00:57:26,781 INFO L226 Difference]: Without dead ends: 81911 [2020-10-14 00:57:26,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:57:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81911 states. [2020-10-14 00:57:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81911 to 79254. [2020-10-14 00:57:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79254 states. [2020-10-14 00:57:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79254 states to 79254 states and 92892 transitions. [2020-10-14 00:57:28,418 INFO L78 Accepts]: Start accepts. Automaton has 79254 states and 92892 transitions. Word has length 636 [2020-10-14 00:57:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:28,419 INFO L479 AbstractCegarLoop]: Abstraction has 79254 states and 92892 transitions. [2020-10-14 00:57:28,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 79254 states and 92892 transitions. [2020-10-14 00:57:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-14 00:57:28,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:28,562 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:28,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:57:28,563 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1462792198, now seen corresponding path program 1 times [2020-10-14 00:57:28,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:28,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930826654] [2020-10-14 00:57:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 672 [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:33,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:57:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:57:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:33,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:33,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:33,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:33,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:33,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:57:34,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:57:34,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:57:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:57:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:57:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:57:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:57:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:57:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:57:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:57:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 00:57:34,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 00:57:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 00:57:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 00:57:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:34,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-14 00:57:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:57:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 00:57:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-14 00:57:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 00:57:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:34,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 00:57:34,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:34,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 522 proven. 265 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-10-14 00:57:35,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930826654] [2020-10-14 00:57:35,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:35,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:57:35,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671801242] [2020-10-14 00:57:35,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:57:35,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:57:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:57:35,426 INFO L87 Difference]: Start difference. First operand 79254 states and 92892 transitions. Second operand 8 states. [2020-10-14 00:57:35,585 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 00:57:35,930 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:57:38,208 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 00:57:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:40,495 INFO L93 Difference]: Finished difference Result 159513 states and 185916 transitions. [2020-10-14 00:57:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:57:40,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 650 [2020-10-14 00:57:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:40,703 INFO L225 Difference]: With dead ends: 159513 [2020-10-14 00:57:40,703 INFO L226 Difference]: Without dead ends: 95134 [2020-10-14 00:57:40,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:57:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95134 states. [2020-10-14 00:57:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95134 to 94702. [2020-10-14 00:57:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94702 states. [2020-10-14 00:57:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94702 states to 94702 states and 109731 transitions. [2020-10-14 00:57:42,610 INFO L78 Accepts]: Start accepts. Automaton has 94702 states and 109731 transitions. Word has length 650 [2020-10-14 00:57:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:42,610 INFO L479 AbstractCegarLoop]: Abstraction has 94702 states and 109731 transitions. [2020-10-14 00:57:42,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:57:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 94702 states and 109731 transitions. [2020-10-14 00:57:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-14 00:57:42,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:42,779 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:42,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:57:42,780 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:42,780 INFO L82 PathProgramCache]: Analyzing trace with hash -486980225, now seen corresponding path program 1 times [2020-10-14 00:57:42,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:42,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328576561] [2020-10-14 00:57:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:45,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking...