/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:31:34,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:31:34,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:31:34,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:31:34,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:31:34,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:31:34,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:31:34,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:31:34,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:31:34,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:31:34,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:31:34,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:31:34,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:31:34,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:31:34,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:31:34,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:31:34,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:31:34,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:31:34,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:31:34,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:31:34,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:31:34,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:31:34,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:31:34,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:31:34,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:31:34,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:31:34,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:31:34,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:31:34,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:31:34,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:31:34,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:31:34,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:31:34,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:31:34,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:31:34,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:31:34,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:31:34,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:31:34,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:31:34,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:31:34,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:31:34,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:31:34,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:31:34,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:31:34,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:31:34,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:31:34,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:31:34,413 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:31:34,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:31:34,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:31:34,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:31:34,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:31:34,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:31:34,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:31:34,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:31:34,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:31:34,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:31:34,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:31:34,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:31:34,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:31:34,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:31:34,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:31:34,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:31:34,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:31:34,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:31:34,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:31:34,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:31:34,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:31:34,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:31:34,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:31:34,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:31:34,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:31:34,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:31:34,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:31:34,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:31:34,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:31:34,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:31:34,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:31:34,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2020-10-14 03:31:34,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1da273203/390c55a17f9b426289607644b3730a02/FLAGe529c1cb6 [2020-10-14 03:31:35,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:31:35,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2020-10-14 03:31:35,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1da273203/390c55a17f9b426289607644b3730a02/FLAGe529c1cb6 [2020-10-14 03:31:35,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1da273203/390c55a17f9b426289607644b3730a02 [2020-10-14 03:31:35,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:31:35,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:31:35,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:31:35,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:31:35,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:31:35,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:35" (1/1) ... [2020-10-14 03:31:35,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0c700e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:35, skipping insertion in model container [2020-10-14 03:31:35,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:35" (1/1) ... [2020-10-14 03:31:35,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:31:35,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:31:36,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:31:36,606 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:31:37,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:31:37,174 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:31:37,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37 WrapperNode [2020-10-14 03:31:37,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:31:37,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:31:37,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:31:37,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:31:37,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... [2020-10-14 03:31:37,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:31:37,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:31:37,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:31:37,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:31:37,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:31:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:31:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:31:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:31:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:31:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:31:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:31:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:31:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:31:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:31:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:31:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:31:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:31:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:31:42,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:31:42,916 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:31:42,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:42 BoogieIcfgContainer [2020-10-14 03:31:42,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:31:42,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:31:42,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:31:42,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:31:42,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:31:35" (1/3) ... [2020-10-14 03:31:42,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aa8b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:42, skipping insertion in model container [2020-10-14 03:31:42,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:37" (2/3) ... [2020-10-14 03:31:42,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aa8b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:42, skipping insertion in model container [2020-10-14 03:31:42,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:42" (3/3) ... [2020-10-14 03:31:42,934 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2020-10-14 03:31:42,944 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:31:42,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:31:42,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:31:42,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:31:42,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:31:42,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:31:42,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:31:42,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:31:42,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:31:42,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:31:42,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:31:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:31:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 03:31:43,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:43,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:43,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1117771851, now seen corresponding path program 1 times [2020-10-14 03:31:43,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:43,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970400536] [2020-10-14 03:31:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:43,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:43,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 03:31:43,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 03:31:43,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:43,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:31:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:31:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 03:31:43,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:31:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:43,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:43,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:43,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:31:43,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:43,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:31:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:31:43,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970400536] [2020-10-14 03:31:43,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:31:43,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:31:43,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136128070] [2020-10-14 03:31:43,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:31:43,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:43,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:31:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:31:43,731 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:31:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:49,812 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:31:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:31:49,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 03:31:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:49,834 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:31:49,834 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:31:49,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:31:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:31:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:31:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:31:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:31:49,937 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 19 [2020-10-14 03:31:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:49,938 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:31:49,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:31:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:31:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 03:31:49,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:49,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:49,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:31:49,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:49,943 INFO L82 PathProgramCache]: Analyzing trace with hash -233527790, now seen corresponding path program 1 times [2020-10-14 03:31:49,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:49,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317210544] [2020-10-14 03:31:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:51,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 03:31:51,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:31:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-10-14 03:31:51,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:51,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:31:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 03:31:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:31:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:51,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:51,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:51,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:31:51,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:51,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:51,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:51,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:51,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:31:51,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:31:51,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:51,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:31:51,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:31:51,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317210544] [2020-10-14 03:31:51,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:51,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:31:51,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806114229] [2020-10-14 03:31:51,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:31:51,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:51,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:31:51,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:31:51,517 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:32:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:01,392 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 03:32:01,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:01,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 03:32:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:01,401 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 03:32:01,401 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 03:32:01,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 03:32:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 03:32:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 03:32:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 03:32:01,451 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 88 [2020-10-14 03:32:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:01,452 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 03:32:01,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 03:32:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 03:32:01,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:01,459 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:01,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:32:01,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1203205874, now seen corresponding path program 1 times [2020-10-14 03:32:01,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:01,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742582068] [2020-10-14 03:32:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:05,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 03:32:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:32:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4163 [2020-10-14 03:32:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:05,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:32:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:32:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:05,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:05,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:05,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:05,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:05,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:05,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:32:05,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:32:05,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:05,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:32:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:32:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:06,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:06,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:32:06,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:06,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 03:32:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:06,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:32:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:32:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:32:06,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742582068] [2020-10-14 03:32:06,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:06,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:32:06,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722781873] [2020-10-14 03:32:06,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:32:06,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:06,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:32:06,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:32:06,245 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 7 states. [2020-10-14 03:32:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:13,133 INFO L93 Difference]: Finished difference Result 3606 states and 4792 transitions. [2020-10-14 03:32:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:32:13,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-14 03:32:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:13,149 INFO L225 Difference]: With dead ends: 3606 [2020-10-14 03:32:13,149 INFO L226 Difference]: Without dead ends: 2295 [2020-10-14 03:32:13,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:32:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-14 03:32:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1962. [2020-10-14 03:32:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-10-14 03:32:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2434 transitions. [2020-10-14 03:32:13,212 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2434 transitions. Word has length 193 [2020-10-14 03:32:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:13,213 INFO L479 AbstractCegarLoop]: Abstraction has 1962 states and 2434 transitions. [2020-10-14 03:32:13,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:32:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2434 transitions. [2020-10-14 03:32:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 03:32:13,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:13,219 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:13,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:32:13,220 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash -368459252, now seen corresponding path program 1 times [2020-10-14 03:32:13,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:13,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507878493] [2020-10-14 03:32:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:17,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 03:32:17,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:32:17,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4309 [2020-10-14 03:32:17,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:17,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:32:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:32:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:17,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:17,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:32:17,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:17,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:17,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:32:17,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 03:32:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:17,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:32:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:32:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:32:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:32:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:18,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:32:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:32:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:32:18,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507878493] [2020-10-14 03:32:18,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:18,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:32:18,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971625667] [2020-10-14 03:32:18,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:32:18,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:18,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:32:18,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:32:18,274 INFO L87 Difference]: Start difference. First operand 1962 states and 2434 transitions. Second operand 7 states. [2020-10-14 03:32:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:26,975 INFO L93 Difference]: Finished difference Result 4935 states and 6321 transitions. [2020-10-14 03:32:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:32:26,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-14 03:32:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:26,993 INFO L225 Difference]: With dead ends: 4935 [2020-10-14 03:32:26,994 INFO L226 Difference]: Without dead ends: 2979 [2020-10-14 03:32:26,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:32:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2020-10-14 03:32:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2939. [2020-10-14 03:32:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2939 states. [2020-10-14 03:32:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3666 transitions. [2020-10-14 03:32:27,089 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3666 transitions. Word has length 299 [2020-10-14 03:32:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:27,093 INFO L479 AbstractCegarLoop]: Abstraction has 2939 states and 3666 transitions. [2020-10-14 03:32:27,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:32:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3666 transitions. [2020-10-14 03:32:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-14 03:32:27,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:27,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:27,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:32:27,103 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -416657174, now seen corresponding path program 1 times [2020-10-14 03:32:27,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:27,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445229152] [2020-10-14 03:32:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:32,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:32,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-14 03:32:32,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:32:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 03:32:32,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:32,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:32:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:32:32,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:32,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:32,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:32,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:32,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:32:32,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:32,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:32,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:32:32,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 03:32:32,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:32,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:32:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:32:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:32,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:32:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 03:32:32,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:32,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:32:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:32:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:32:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:33,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:32:33,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:32:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:33,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 03:32:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 148 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:32:33,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445229152] [2020-10-14 03:32:33,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:33,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:32:33,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770773742] [2020-10-14 03:32:33,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:32:33,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:33,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:32:33,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:32:33,513 INFO L87 Difference]: Start difference. First operand 2939 states and 3666 transitions. Second operand 7 states. [2020-10-14 03:32:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:44,046 INFO L93 Difference]: Finished difference Result 6948 states and 8985 transitions. [2020-10-14 03:32:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:32:44,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-14 03:32:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:44,072 INFO L225 Difference]: With dead ends: 6948 [2020-10-14 03:32:44,072 INFO L226 Difference]: Without dead ends: 4015 [2020-10-14 03:32:44,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:32:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2020-10-14 03:32:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3916. [2020-10-14 03:32:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3916 states. [2020-10-14 03:32:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 4772 transitions. [2020-10-14 03:32:44,204 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 4772 transitions. Word has length 409 [2020-10-14 03:32:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:44,205 INFO L479 AbstractCegarLoop]: Abstraction has 3916 states and 4772 transitions. [2020-10-14 03:32:44,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:32:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 4772 transitions. [2020-10-14 03:32:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-14 03:32:44,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:44,214 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:44,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:32:44,215 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash -450184505, now seen corresponding path program 1 times [2020-10-14 03:32:44,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:44,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880797964] [2020-10-14 03:32:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:49,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:32:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 03:32:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:32:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:49,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:49,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:49,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:32:49,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 03:32:49,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:49,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:32:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:32:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:32:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 03:32:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 03:32:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:50,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:32:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 03:32:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:50,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 03:32:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 161 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:32:50,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880797964] [2020-10-14 03:32:50,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:50,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:32:50,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510685799] [2020-10-14 03:32:50,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:32:50,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:32:50,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:32:50,168 INFO L87 Difference]: Start difference. First operand 3916 states and 4772 transitions. Second operand 7 states. [2020-10-14 03:33:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:02,699 INFO L93 Difference]: Finished difference Result 11351 states and 14197 transitions. [2020-10-14 03:33:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:33:02,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-14 03:33:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:02,735 INFO L225 Difference]: With dead ends: 11351 [2020-10-14 03:33:02,735 INFO L226 Difference]: Without dead ends: 7441 [2020-10-14 03:33:02,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2020-10-14 03:33:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 7087. [2020-10-14 03:33:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7087 states. [2020-10-14 03:33:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 8829 transitions. [2020-10-14 03:33:02,913 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 8829 transitions. Word has length 424 [2020-10-14 03:33:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:02,914 INFO L479 AbstractCegarLoop]: Abstraction has 7087 states and 8829 transitions. [2020-10-14 03:33:02,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 8829 transitions. [2020-10-14 03:33:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-14 03:33:02,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:02,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:02,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:33:02,928 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:02,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1807431144, now seen corresponding path program 1 times [2020-10-14 03:33:02,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:02,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284116008] [2020-10-14 03:33:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:08,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-14 03:33:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:33:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 03:33:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:08,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-14 03:33:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:33:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:33:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:08,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:08,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:08,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:33:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:08,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:33:08,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:08,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:33:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:08,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:08,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:33:08,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 03:33:08,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:08,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:08,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 03:33:08,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:08,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:33:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:08,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:08,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:33:08,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 03:33:08,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:08,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:33:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 03:33:09,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284116008] [2020-10-14 03:33:09,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:09,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:09,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164964112] [2020-10-14 03:33:09,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:09,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:09,042 INFO L87 Difference]: Start difference. First operand 7087 states and 8829 transitions. Second operand 7 states. [2020-10-14 03:33:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:20,529 INFO L93 Difference]: Finished difference Result 15789 states and 20284 transitions. [2020-10-14 03:33:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:33:20,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 467 [2020-10-14 03:33:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:20,566 INFO L225 Difference]: With dead ends: 15789 [2020-10-14 03:33:20,567 INFO L226 Difference]: Without dead ends: 8708 [2020-10-14 03:33:20,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:33:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8708 states. [2020-10-14 03:33:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8708 to 8678. [2020-10-14 03:33:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8678 states. [2020-10-14 03:33:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8678 states to 8678 states and 10640 transitions. [2020-10-14 03:33:20,796 INFO L78 Accepts]: Start accepts. Automaton has 8678 states and 10640 transitions. Word has length 467 [2020-10-14 03:33:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:20,797 INFO L479 AbstractCegarLoop]: Abstraction has 8678 states and 10640 transitions. [2020-10-14 03:33:20,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states and 10640 transitions. [2020-10-14 03:33:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-14 03:33:20,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:20,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:20,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:33:20,815 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1505317796, now seen corresponding path program 1 times [2020-10-14 03:33:20,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:20,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530253231] [2020-10-14 03:33:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:25,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-14 03:33:25,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:33:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 03:33:25,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:25,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-14 03:33:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:33:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:26,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:26,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:33:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 03:33:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:26,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:26,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:33:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:26,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:26,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:33:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:33:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:26,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:33:26,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:33:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:26,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:33:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 03:33:26,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530253231] [2020-10-14 03:33:26,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:26,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:26,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581743002] [2020-10-14 03:33:26,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:26,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:26,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:26,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:26,516 INFO L87 Difference]: Start difference. First operand 8678 states and 10640 transitions. Second operand 7 states. [2020-10-14 03:33:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:38,688 INFO L93 Difference]: Finished difference Result 20681 states and 27164 transitions. [2020-10-14 03:33:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:33:38,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-14 03:33:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:38,756 INFO L225 Difference]: With dead ends: 20681 [2020-10-14 03:33:38,756 INFO L226 Difference]: Without dead ends: 12009 [2020-10-14 03:33:38,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:38,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12009 states. [2020-10-14 03:33:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12009 to 11528. [2020-10-14 03:33:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11528 states. [2020-10-14 03:33:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 14164 transitions. [2020-10-14 03:33:39,197 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 14164 transitions. Word has length 479 [2020-10-14 03:33:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:39,199 INFO L479 AbstractCegarLoop]: Abstraction has 11528 states and 14164 transitions. [2020-10-14 03:33:39,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 14164 transitions. [2020-10-14 03:33:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-14 03:33:39,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:39,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:39,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:33:39,230 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1680014117, now seen corresponding path program 1 times [2020-10-14 03:33:39,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:39,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901475524] [2020-10-14 03:33:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:42,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:42,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:33:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:42,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:42,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:42,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:33:42,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:42,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:42,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:42,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:42,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:42,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:43,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:33:43,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 03:33:43,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:43,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:33:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:33:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:33:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:33:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:33:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:43,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 03:33:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:43,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:43,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:43,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:33:43,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:33:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:43,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:33:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 148 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 03:33:43,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901475524] [2020-10-14 03:33:43,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:43,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:43,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684992118] [2020-10-14 03:33:43,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:43,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:43,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:43,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:43,902 INFO L87 Difference]: Start difference. First operand 11528 states and 14164 transitions. Second operand 7 states. [2020-10-14 03:33:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:51,715 INFO L93 Difference]: Finished difference Result 23863 states and 30516 transitions. [2020-10-14 03:33:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:33:51,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-14 03:33:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:51,786 INFO L225 Difference]: With dead ends: 23863 [2020-10-14 03:33:51,786 INFO L226 Difference]: Without dead ends: 12341 [2020-10-14 03:33:51,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:33:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12341 states. [2020-10-14 03:33:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12341 to 11850. [2020-10-14 03:33:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11850 states. [2020-10-14 03:33:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11850 states to 11850 states and 14535 transitions. [2020-10-14 03:33:52,165 INFO L78 Accepts]: Start accepts. Automaton has 11850 states and 14535 transitions. Word has length 487 [2020-10-14 03:33:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:52,166 INFO L479 AbstractCegarLoop]: Abstraction has 11850 states and 14535 transitions. [2020-10-14 03:33:52,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 11850 states and 14535 transitions. [2020-10-14 03:33:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 03:33:52,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:52,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:33:52,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:33:52,182 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1552213557, now seen corresponding path program 1 times [2020-10-14 03:33:52,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:52,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782882653] [2020-10-14 03:33:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 03:33:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:33:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 03:33:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:57,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-14 03:33:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:33:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:57,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:57,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:57,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:33:57,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:57,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:57,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:33:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:57,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:33:57,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:57,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 03:33:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:57,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 03:33:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-14 03:33:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:57,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:57,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:33:57,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:33:57,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:57,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:33:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 03:33:58,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782882653] [2020-10-14 03:33:58,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:58,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:58,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213328593] [2020-10-14 03:33:58,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:58,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:58,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:58,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:58,070 INFO L87 Difference]: Start difference. First operand 11850 states and 14535 transitions. Second operand 7 states. [2020-10-14 03:34:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:08,767 INFO L93 Difference]: Finished difference Result 31830 states and 39806 transitions. [2020-10-14 03:34:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:34:08,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2020-10-14 03:34:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:08,810 INFO L225 Difference]: With dead ends: 31830 [2020-10-14 03:34:08,810 INFO L226 Difference]: Without dead ends: 17142 [2020-10-14 03:34:08,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:08,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17142 states. [2020-10-14 03:34:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17142 to 14337. [2020-10-14 03:34:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14337 states. [2020-10-14 03:34:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14337 states to 14337 states and 17146 transitions. [2020-10-14 03:34:09,162 INFO L78 Accepts]: Start accepts. Automaton has 14337 states and 17146 transitions. Word has length 504 [2020-10-14 03:34:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:09,163 INFO L479 AbstractCegarLoop]: Abstraction has 14337 states and 17146 transitions. [2020-10-14 03:34:09,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14337 states and 17146 transitions. [2020-10-14 03:34:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-14 03:34:09,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:09,184 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:09,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:34:09,184 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:09,185 INFO L82 PathProgramCache]: Analyzing trace with hash -150577364, now seen corresponding path program 1 times [2020-10-14 03:34:09,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:09,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271266189] [2020-10-14 03:34:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:14,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:14,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-14 03:34:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:34:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 03:34:14,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:14,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 546 [2020-10-14 03:34:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:34:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:14,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:34:14,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:34:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:14,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:34:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:34:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:34:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2020-10-14 03:34:14,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271266189] [2020-10-14 03:34:14,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:34:14,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:34:14,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788102225] [2020-10-14 03:34:14,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:34:14,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:14,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:34:14,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:34:14,925 INFO L87 Difference]: Start difference. First operand 14337 states and 17146 transitions. Second operand 5 states. [2020-10-14 03:34:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:23,294 INFO L93 Difference]: Finished difference Result 29286 states and 35040 transitions. [2020-10-14 03:34:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:34:23,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 553 [2020-10-14 03:34:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:23,334 INFO L225 Difference]: With dead ends: 29286 [2020-10-14 03:34:23,334 INFO L226 Difference]: Without dead ends: 14955 [2020-10-14 03:34:23,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:34:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14955 states. [2020-10-14 03:34:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14955 to 14333. [2020-10-14 03:34:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14333 states. [2020-10-14 03:34:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14333 states to 14333 states and 17132 transitions. [2020-10-14 03:34:23,634 INFO L78 Accepts]: Start accepts. Automaton has 14333 states and 17132 transitions. Word has length 553 [2020-10-14 03:34:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:23,635 INFO L479 AbstractCegarLoop]: Abstraction has 14333 states and 17132 transitions. [2020-10-14 03:34:23,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:34:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 14333 states and 17132 transitions. [2020-10-14 03:34:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-14 03:34:23,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:23,653 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:23,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:34:23,653 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:23,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash 127092008, now seen corresponding path program 1 times [2020-10-14 03:34:23,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:23,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193089952] [2020-10-14 03:34:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:27,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:28,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:28,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-14 03:34:28,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:34:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 03:34:28,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:28,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 470 [2020-10-14 03:34:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:34:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:34:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:34:28,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:28,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:34:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:29,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:34:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:34:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:29,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:34:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:29,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:29,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:34:29,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:34:29,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:29,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:34:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-10-14 03:34:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:29,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:34:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-14 03:34:29,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193089952] [2020-10-14 03:34:29,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:29,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:29,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843474823] [2020-10-14 03:34:29,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:29,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:29,390 INFO L87 Difference]: Start difference. First operand 14333 states and 17132 transitions. Second operand 7 states. [2020-10-14 03:34:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:42,711 INFO L93 Difference]: Finished difference Result 30897 states and 38063 transitions. [2020-10-14 03:34:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:34:42,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 555 [2020-10-14 03:34:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:42,770 INFO L225 Difference]: With dead ends: 30897 [2020-10-14 03:34:42,770 INFO L226 Difference]: Without dead ends: 16570 [2020-10-14 03:34:42,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16570 states. [2020-10-14 03:34:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16570 to 16496. [2020-10-14 03:34:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16496 states. [2020-10-14 03:34:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16496 states to 16496 states and 20172 transitions. [2020-10-14 03:34:43,127 INFO L78 Accepts]: Start accepts. Automaton has 16496 states and 20172 transitions. Word has length 555 [2020-10-14 03:34:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:43,128 INFO L479 AbstractCegarLoop]: Abstraction has 16496 states and 20172 transitions. [2020-10-14 03:34:43,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 16496 states and 20172 transitions. [2020-10-14 03:34:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-14 03:34:43,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:43,144 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:43,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:34:43,145 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1922668054, now seen corresponding path program 1 times [2020-10-14 03:34:43,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:43,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997787288] [2020-10-14 03:34:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:48,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-14 03:34:48,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:34:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 03:34:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:48,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 470 [2020-10-14 03:34:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:34:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:48,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:48,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:34:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:48,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:48,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:48,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:34:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 03:34:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:48,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:34:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:48,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:48,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:34:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:48,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:48,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:34:48,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:34:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:48,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:34:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-10-14 03:34:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:34:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-14 03:34:48,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997787288] [2020-10-14 03:34:48,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:48,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:48,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296486398] [2020-10-14 03:34:48,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:48,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:48,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:48,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:48,977 INFO L87 Difference]: Start difference. First operand 16496 states and 20172 transitions. Second operand 7 states. [2020-10-14 03:35:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:03,855 INFO L93 Difference]: Finished difference Result 36330 states and 47299 transitions. [2020-10-14 03:35:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:03,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-14 03:35:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:03,933 INFO L225 Difference]: With dead ends: 36330 [2020-10-14 03:35:03,933 INFO L226 Difference]: Without dead ends: 19840 [2020-10-14 03:35:03,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19840 states. [2020-10-14 03:35:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19840 to 19514. [2020-10-14 03:35:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19514 states. [2020-10-14 03:35:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19514 states to 19514 states and 25147 transitions. [2020-10-14 03:35:04,412 INFO L78 Accepts]: Start accepts. Automaton has 19514 states and 25147 transitions. Word has length 558 [2020-10-14 03:35:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:04,414 INFO L479 AbstractCegarLoop]: Abstraction has 19514 states and 25147 transitions. [2020-10-14 03:35:04,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 19514 states and 25147 transitions. [2020-10-14 03:35:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-14 03:35:04,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:04,444 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:04,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:35:04,445 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:04,445 INFO L82 PathProgramCache]: Analyzing trace with hash -293658341, now seen corresponding path program 1 times [2020-10-14 03:35:04,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:04,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598578377] [2020-10-14 03:35:04,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:09,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:09,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-14 03:35:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:35:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 03:35:09,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:09,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 470 [2020-10-14 03:35:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:35:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:09,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:09,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:09,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:35:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:09,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:35:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:09,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:09,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:35:09,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:09,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-10-14 03:35:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:10,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:35:10,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 03:35:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:10,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:35:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-14 03:35:10,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598578377] [2020-10-14 03:35:10,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:10,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:10,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980257997] [2020-10-14 03:35:10,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:10,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:10,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:10,248 INFO L87 Difference]: Start difference. First operand 19514 states and 25147 transitions. Second operand 7 states. [2020-10-14 03:35:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:22,466 INFO L93 Difference]: Finished difference Result 46605 states and 60660 transitions. [2020-10-14 03:35:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:22,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 574 [2020-10-14 03:35:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:22,586 INFO L225 Difference]: With dead ends: 46605 [2020-10-14 03:35:22,586 INFO L226 Difference]: Without dead ends: 27101 [2020-10-14 03:35:22,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27101 states. [2020-10-14 03:35:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27101 to 25508. [2020-10-14 03:35:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25508 states. [2020-10-14 03:35:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25508 states to 25508 states and 33061 transitions. [2020-10-14 03:35:23,355 INFO L78 Accepts]: Start accepts. Automaton has 25508 states and 33061 transitions. Word has length 574 [2020-10-14 03:35:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:23,359 INFO L479 AbstractCegarLoop]: Abstraction has 25508 states and 33061 transitions. [2020-10-14 03:35:23,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 25508 states and 33061 transitions. [2020-10-14 03:35:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-14 03:35:23,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:23,380 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:23,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:35:23,381 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash 296681466, now seen corresponding path program 1 times [2020-10-14 03:35:23,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:23,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515945242] [2020-10-14 03:35:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:24,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:24,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-14 03:35:24,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:35:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:24,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:24,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:35:24,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:24,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:24,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:24,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:35:24,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:24,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:35:24,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:24,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:35:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:35:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:35:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 03:35:25,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:25,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:35:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:35:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:35:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 03:35:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 410 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 03:35:25,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515945242] [2020-10-14 03:35:25,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:25,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 03:35:25,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991057882] [2020-10-14 03:35:25,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 03:35:25,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 03:35:25,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:35:25,775 INFO L87 Difference]: Start difference. First operand 25508 states and 33061 transitions. Second operand 10 states.