/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:10:09,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:10:09,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:10:09,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:10:09,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:10:09,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:10:09,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:10:09,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:10:09,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:10:09,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:10:09,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:10:09,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:10:09,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:10:09,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:10:09,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:10:09,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:10:09,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:10:09,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:10:09,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:10:09,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:10:09,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:10:09,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:10:09,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:10:09,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:10:09,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:10:09,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:10:09,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:10:09,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:10:09,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:10:09,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:10:09,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:10:09,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:10:09,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:10:09,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:10:09,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:10:09,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:10:09,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:10:09,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:10:09,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:10:09,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:10:09,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:10:09,176 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 19:10:09,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:10:09,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:10:09,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:10:09,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:10:09,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:10:09,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:10:09,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:10:09,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:10:09,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:10:09,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:10:09,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:10:09,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:10:09,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:10:09,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:10:09,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:10:09,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:10:09,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:10:09,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:10:09,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:10:09,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:10:09,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:10:09,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:10:09,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:10:09,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:10:09,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:10:09,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:10:09,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:10:09,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:10:09,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:10:09,226 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:10:09,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:10:09,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:10:09,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:10:09,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:10:09,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:10:09,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-14 19:10:09,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6d404911/a3e6c71e68d243b680663e1831b81039/FLAGaf5761d55 [2020-10-14 19:10:10,157 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:10:10,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-14 19:10:10,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6d404911/a3e6c71e68d243b680663e1831b81039/FLAGaf5761d55 [2020-10-14 19:10:10,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6d404911/a3e6c71e68d243b680663e1831b81039 [2020-10-14 19:10:10,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:10:10,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:10:10,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:10:10,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:10:10,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:10:10,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:10:10" (1/1) ... [2020-10-14 19:10:10,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cd3f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:10, skipping insertion in model container [2020-10-14 19:10:10,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:10:10" (1/1) ... [2020-10-14 19:10:10,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:10:10,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:10:11,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:10:11,311 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:10:11,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:10:11,644 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:10:11,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11 WrapperNode [2020-10-14 19:10:11,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:10:11,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:10:11,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:10:11,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:10:11,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 19:10:11,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:10:11,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:10:11,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:10:11,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:10:11,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (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 19:10:11,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:10:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:10:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:10:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:10:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:10:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:10:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:10:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:10:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:10:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:10:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:10:13,630 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:10:13,631 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:10:13,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:10:13 BoogieIcfgContainer [2020-10-14 19:10:13,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:10:13,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:10:13,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:10:13,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:10:13,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:10:10" (1/3) ... [2020-10-14 19:10:13,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b09dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:10:13, skipping insertion in model container [2020-10-14 19:10:13,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (2/3) ... [2020-10-14 19:10:13,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b09dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:10:13, skipping insertion in model container [2020-10-14 19:10:13,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:10:13" (3/3) ... [2020-10-14 19:10:13,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label17.c [2020-10-14 19:10:13,664 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:10:13,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:10:13,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:10:13,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:10:13,718 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:10:13,718 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:10:13,719 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:10:13,719 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:10:13,719 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:10:13,719 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:10:13,719 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:10:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:10:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 19:10:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:13,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:13,787 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:13,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1924076088, now seen corresponding path program 1 times [2020-10-14 19:10:13,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:13,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475652835] [2020-10-14 19:10:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:14,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:17,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 19:10:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:17,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3315 [2020-10-14 19:10:17,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:17,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:17,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:10:17,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:10:17,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 19:10:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:10:17,937 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:17,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:10:17,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:17,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:10:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:18,073 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 19:10:18,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475652835] [2020-10-14 19:10:18,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:10:18,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:10:18,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780902966] [2020-10-14 19:10:18,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:18,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:18,100 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:10:18,292 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:18,778 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:22,086 INFO L93 Difference]: Finished difference Result 1111 states and 1980 transitions. [2020-10-14 19:10:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:10:22,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 19:10:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:22,128 INFO L225 Difference]: With dead ends: 1111 [2020-10-14 19:10:22,128 INFO L226 Difference]: Without dead ends: 703 [2020-10-14 19:10:22,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-14 19:10:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 467. [2020-10-14 19:10:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-14 19:10:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 718 transitions. [2020-10-14 19:10:22,228 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 718 transitions. Word has length 205 [2020-10-14 19:10:22,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:22,230 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 718 transitions. [2020-10-14 19:10:22,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:10:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 718 transitions. [2020-10-14 19:10:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 19:10:22,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:22,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:22,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:10:22,236 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash -333889460, now seen corresponding path program 1 times [2020-10-14 19:10:22,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:22,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084257823] [2020-10-14 19:10:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 19:10:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:10:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3833 [2020-10-14 19:10:26,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:10:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 19:10:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:26,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:10:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:10:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:10:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:10:27,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084257823] [2020-10-14 19:10:27,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:27,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:10:27,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935877159] [2020-10-14 19:10:27,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:27,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:27,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:27,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:27,241 INFO L87 Difference]: Start difference. First operand 467 states and 718 transitions. Second operand 5 states. [2020-10-14 19:10:27,538 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:10:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:29,788 INFO L93 Difference]: Finished difference Result 1110 states and 1759 transitions. [2020-10-14 19:10:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:10:29,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 19:10:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:29,797 INFO L225 Difference]: With dead ends: 1110 [2020-10-14 19:10:29,797 INFO L226 Difference]: Without dead ends: 471 [2020-10-14 19:10:29,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:10:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-14 19:10:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2020-10-14 19:10:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-14 19:10:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 677 transitions. [2020-10-14 19:10:29,859 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 677 transitions. Word has length 217 [2020-10-14 19:10:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:29,859 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 677 transitions. [2020-10-14 19:10:29,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:10:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 677 transitions. [2020-10-14 19:10:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 19:10:29,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:29,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:29,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:10:29,866 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:29,867 INFO L82 PathProgramCache]: Analyzing trace with hash -826313917, now seen corresponding path program 1 times [2020-10-14 19:10:29,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:29,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329815752] [2020-10-14 19:10:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 19:10:33,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-10-14 19:10:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:33,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 19:10:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 19:10:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:33,968 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:33,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:33,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:10:33,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:33,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:34,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:34,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:10:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:10:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:34,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:34,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:34,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 19:10:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:10:34,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329815752] [2020-10-14 19:10:34,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:34,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:10:34,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090675423] [2020-10-14 19:10:34,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:34,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:34,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:34,269 INFO L87 Difference]: Start difference. First operand 467 states and 677 transitions. Second operand 5 states. [2020-10-14 19:10:34,464 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:36,723 INFO L93 Difference]: Finished difference Result 1363 states and 1997 transitions. [2020-10-14 19:10:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:10:36,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-14 19:10:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:36,736 INFO L225 Difference]: With dead ends: 1363 [2020-10-14 19:10:36,737 INFO L226 Difference]: Without dead ends: 902 [2020-10-14 19:10:36,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:10:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-14 19:10:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 897. [2020-10-14 19:10:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-14 19:10:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1234 transitions. [2020-10-14 19:10:36,790 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1234 transitions. Word has length 218 [2020-10-14 19:10:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:36,793 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1234 transitions. [2020-10-14 19:10:36,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:10:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1234 transitions. [2020-10-14 19:10:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 19:10:36,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:36,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:36,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:10:36,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1461450192, now seen corresponding path program 1 times [2020-10-14 19:10:36,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:36,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466759904] [2020-10-14 19:10:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:40,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:40,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 19:10:40,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:10:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3467 [2020-10-14 19:10:40,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:40,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:10:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 19:10:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:10:40,608 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:40,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:40,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:40,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:10:40,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:10:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:40,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:10:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:10:40,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466759904] [2020-10-14 19:10:40,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:40,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:10:40,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930473488] [2020-10-14 19:10:40,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:40,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:40,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:40,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:40,854 INFO L87 Difference]: Start difference. First operand 897 states and 1234 transitions. Second operand 5 states. [2020-10-14 19:10:41,010 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:43,104 INFO L93 Difference]: Finished difference Result 2640 states and 3699 transitions. [2020-10-14 19:10:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:10:43,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-14 19:10:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:43,116 INFO L225 Difference]: With dead ends: 2640 [2020-10-14 19:10:43,116 INFO L226 Difference]: Without dead ends: 1749 [2020-10-14 19:10:43,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:10:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-10-14 19:10:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1742. [2020-10-14 19:10:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2020-10-14 19:10:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2327 transitions. [2020-10-14 19:10:43,186 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2327 transitions. Word has length 219 [2020-10-14 19:10:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:43,187 INFO L479 AbstractCegarLoop]: Abstraction has 1742 states and 2327 transitions. [2020-10-14 19:10:43,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:10:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2327 transitions. [2020-10-14 19:10:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 19:10:43,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:43,194 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:43,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:10:43,196 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:43,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1497532015, now seen corresponding path program 1 times [2020-10-14 19:10:43,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:43,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890159750] [2020-10-14 19:10:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 19:10:48,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 19:10:48,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:48,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 19:10:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 19:10:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:48,529 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:48,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:48,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:48,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:10:48,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:10:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:48,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:48,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:10:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:10:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:10:48,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890159750] [2020-10-14 19:10:48,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:48,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:10:48,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100360695] [2020-10-14 19:10:48,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:48,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:48,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:48,787 INFO L87 Difference]: Start difference. First operand 1742 states and 2327 transitions. Second operand 5 states. [2020-10-14 19:10:49,059 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:51,290 INFO L93 Difference]: Finished difference Result 5157 states and 7047 transitions. [2020-10-14 19:10:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:10:51,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-14 19:10:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:51,315 INFO L225 Difference]: With dead ends: 5157 [2020-10-14 19:10:51,316 INFO L226 Difference]: Without dead ends: 3421 [2020-10-14 19:10:51,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:10:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2020-10-14 19:10:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3414. [2020-10-14 19:10:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3414 states. [2020-10-14 19:10:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4566 transitions. [2020-10-14 19:10:51,425 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4566 transitions. Word has length 250 [2020-10-14 19:10:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:51,426 INFO L479 AbstractCegarLoop]: Abstraction has 3414 states and 4566 transitions. [2020-10-14 19:10:51,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:10:51,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4566 transitions. [2020-10-14 19:10:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 19:10:51,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:51,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:51,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:10:51,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:51,438 INFO L82 PathProgramCache]: Analyzing trace with hash 890936851, now seen corresponding path program 1 times [2020-10-14 19:10:51,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:51,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146338669] [2020-10-14 19:10:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 19:10:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:10:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4159 [2020-10-14 19:10:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:55,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:10:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 19:10:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:55,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:55,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:55,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:55,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:55,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:55,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:55,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:10:55,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:55,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:10:55,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:55,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:55,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:55,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:55,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:10:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:56,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:10:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:10:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:10:56,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146338669] [2020-10-14 19:10:56,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:56,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:10:56,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327636476] [2020-10-14 19:10:56,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:56,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:56,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:56,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:56,115 INFO L87 Difference]: Start difference. First operand 3414 states and 4566 transitions. Second operand 5 states. [2020-10-14 19:10:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:58,348 INFO L93 Difference]: Finished difference Result 9773 states and 13436 transitions. [2020-10-14 19:10:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:10:58,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-14 19:10:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:58,385 INFO L225 Difference]: With dead ends: 9773 [2020-10-14 19:10:58,386 INFO L226 Difference]: Without dead ends: 6365 [2020-10-14 19:10:58,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:10:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2020-10-14 19:10:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 5717. [2020-10-14 19:10:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5717 states. [2020-10-14 19:10:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 7870 transitions. [2020-10-14 19:10:58,578 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 7870 transitions. Word has length 251 [2020-10-14 19:10:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:58,579 INFO L479 AbstractCegarLoop]: Abstraction has 5717 states and 7870 transitions. [2020-10-14 19:10:58,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:10:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 7870 transitions. [2020-10-14 19:10:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 19:10:58,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:58,599 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:58,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:10:58,599 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:58,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:58,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1907711972, now seen corresponding path program 1 times [2020-10-14 19:10:58,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:58,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470478688] [2020-10-14 19:10:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:58,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:03,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 19:11:03,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:11:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-14 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:04,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:11:04,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:11:04,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:11:04,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:11:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:04,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:11:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:04,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:11:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:04,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:11:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:11:04,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:11:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:11:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:11:05,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470478688] [2020-10-14 19:11:05,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:05,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:11:05,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281210293] [2020-10-14 19:11:05,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:11:05,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:05,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:11:05,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:11:05,105 INFO L87 Difference]: Start difference. First operand 5717 states and 7870 transitions. Second operand 9 states. [2020-10-14 19:11:05,492 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2020-10-14 19:11:05,647 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:11:06,039 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 19:11:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:10,362 INFO L93 Difference]: Finished difference Result 15648 states and 23114 transitions. [2020-10-14 19:11:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:11:10,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 262 [2020-10-14 19:11:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:10,416 INFO L225 Difference]: With dead ends: 15648 [2020-10-14 19:11:10,416 INFO L226 Difference]: Without dead ends: 9881 [2020-10-14 19:11:10,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:11:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2020-10-14 19:11:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 9743. [2020-10-14 19:11:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9743 states. [2020-10-14 19:11:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9743 states to 9743 states and 13711 transitions. [2020-10-14 19:11:10,773 INFO L78 Accepts]: Start accepts. Automaton has 9743 states and 13711 transitions. Word has length 262 [2020-10-14 19:11:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:10,773 INFO L479 AbstractCegarLoop]: Abstraction has 9743 states and 13711 transitions. [2020-10-14 19:11:10,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:11:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 9743 states and 13711 transitions. [2020-10-14 19:11:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 19:11:10,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:10,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:10,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:11:10,821 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:10,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash -846221825, now seen corresponding path program 1 times [2020-10-14 19:11:10,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:10,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795850943] [2020-10-14 19:11:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 19:11:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:11:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 19:11:15,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 19:11:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-14 19:11:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:16,137 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:16,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:16,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:16,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:11:16,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:16,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:16,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:11:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:11:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:11:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:16,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:11:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:11:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:16,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:11:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 72 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 19:11:16,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795850943] [2020-10-14 19:11:16,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:16,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:11:16,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989299205] [2020-10-14 19:11:16,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:11:16,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:16,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:11:16,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:16,439 INFO L87 Difference]: Start difference. First operand 9743 states and 13711 transitions. Second operand 6 states. [2020-10-14 19:11:16,572 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:19,195 INFO L93 Difference]: Finished difference Result 26573 states and 39043 transitions. [2020-10-14 19:11:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:11:19,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 280 [2020-10-14 19:11:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:19,286 INFO L225 Difference]: With dead ends: 26573 [2020-10-14 19:11:19,286 INFO L226 Difference]: Without dead ends: 16836 [2020-10-14 19:11:19,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:11:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16836 states. [2020-10-14 19:11:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16836 to 16586. [2020-10-14 19:11:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16586 states. [2020-10-14 19:11:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16586 states to 16586 states and 23967 transitions. [2020-10-14 19:11:19,955 INFO L78 Accepts]: Start accepts. Automaton has 16586 states and 23967 transitions. Word has length 280 [2020-10-14 19:11:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:19,956 INFO L479 AbstractCegarLoop]: Abstraction has 16586 states and 23967 transitions. [2020-10-14 19:11:19,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:11:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 16586 states and 23967 transitions. [2020-10-14 19:11:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 19:11:20,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:20,043 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:20,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:11:20,044 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash -221889649, now seen corresponding path program 1 times [2020-10-14 19:11:20,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:20,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145910622] [2020-10-14 19:11:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 19:11:25,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:11:25,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:11:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-14 19:11:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,370 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:25,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:11:25,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:11:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:11:25,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:11:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:11:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:11:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 19:11:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 19:11:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:11:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:11:25,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 19:11:25,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:11:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 19:11:25,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145910622] [2020-10-14 19:11:25,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:25,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:11:25,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631311152] [2020-10-14 19:11:25,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:11:25,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:11:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:11:25,846 INFO L87 Difference]: Start difference. First operand 16586 states and 23967 transitions. Second operand 9 states. [2020-10-14 19:11:25,987 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:26,201 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:27,205 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:31,165 INFO L93 Difference]: Finished difference Result 54811 states and 94178 transitions. [2020-10-14 19:11:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 19:11:31,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 285 [2020-10-14 19:11:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:31,467 INFO L225 Difference]: With dead ends: 54811 [2020-10-14 19:11:31,467 INFO L226 Difference]: Without dead ends: 38231 [2020-10-14 19:11:31,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-14 19:11:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2020-10-14 19:11:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 36712. [2020-10-14 19:11:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36712 states. [2020-10-14 19:11:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36712 states to 36712 states and 54656 transitions. [2020-10-14 19:11:34,542 INFO L78 Accepts]: Start accepts. Automaton has 36712 states and 54656 transitions. Word has length 285 [2020-10-14 19:11:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:34,543 INFO L479 AbstractCegarLoop]: Abstraction has 36712 states and 54656 transitions. [2020-10-14 19:11:34,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:11:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 36712 states and 54656 transitions. [2020-10-14 19:11:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 19:11:34,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:34,671 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:34,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:11:34,672 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1951922953, now seen corresponding path program 1 times [2020-10-14 19:11:34,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:34,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307297892] [2020-10-14 19:11:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 19:11:39,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 19:11:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,026 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:40,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:40,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:11:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:40,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:40,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:40,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:11:40,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:40,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:11:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 19:11:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 19:11:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:40,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:11:40,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 19:11:40,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:40,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:11:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 19:11:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:11:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 146 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 19:11:40,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307297892] [2020-10-14 19:11:40,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:40,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:11:40,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169683776] [2020-10-14 19:11:40,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:11:40,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:40,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:11:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:11:40,372 INFO L87 Difference]: Start difference. First operand 36712 states and 54656 transitions. Second operand 8 states. [2020-10-14 19:11:40,932 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:44,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:44,020 INFO L93 Difference]: Finished difference Result 86479 states and 156845 transitions. [2020-10-14 19:11:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:11:44,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-10-14 19:11:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:44,512 INFO L225 Difference]: With dead ends: 86479 [2020-10-14 19:11:44,512 INFO L226 Difference]: Without dead ends: 49773 [2020-10-14 19:11:44,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:11:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49773 states. [2020-10-14 19:11:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49773 to 47369. [2020-10-14 19:11:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47369 states. [2020-10-14 19:11:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47369 states to 47369 states and 67736 transitions. [2020-10-14 19:11:48,742 INFO L78 Accepts]: Start accepts. Automaton has 47369 states and 67736 transitions. Word has length 297 [2020-10-14 19:11:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:48,742 INFO L479 AbstractCegarLoop]: Abstraction has 47369 states and 67736 transitions. [2020-10-14 19:11:48,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:11:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 47369 states and 67736 transitions. [2020-10-14 19:11:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 19:11:48,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:48,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:48,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:11:48,896 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:48,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash -9159675, now seen corresponding path program 1 times [2020-10-14 19:11:48,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:48,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62772135] [2020-10-14 19:11:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:52,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:53,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:53,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 19:11:53,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:11:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 19:11:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:53,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 19:11:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 19:11:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:54,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:54,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:54,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:54,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:11:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:54,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:11:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:11:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:54,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:54,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:11:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:11:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:11:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:54,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:11:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 19:11:54,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62772135] [2020-10-14 19:11:54,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:54,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:11:54,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521278998] [2020-10-14 19:11:54,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:11:54,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:54,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:11:54,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:54,483 INFO L87 Difference]: Start difference. First operand 47369 states and 67736 transitions. Second operand 6 states. [2020-10-14 19:11:54,719 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:11:55,185 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:58,585 INFO L93 Difference]: Finished difference Result 108485 states and 155802 transitions. [2020-10-14 19:11:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:11:58,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 301 [2020-10-14 19:11:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:58,843 INFO L225 Difference]: With dead ends: 108485 [2020-10-14 19:11:58,843 INFO L226 Difference]: Without dead ends: 61122 [2020-10-14 19:11:58,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:11:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61122 states. [2020-10-14 19:12:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61122 to 57807. [2020-10-14 19:12:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57807 states. [2020-10-14 19:12:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57807 states to 57807 states and 83360 transitions. [2020-10-14 19:12:01,062 INFO L78 Accepts]: Start accepts. Automaton has 57807 states and 83360 transitions. Word has length 301 [2020-10-14 19:12:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:01,063 INFO L479 AbstractCegarLoop]: Abstraction has 57807 states and 83360 transitions. [2020-10-14 19:12:01,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:12:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 57807 states and 83360 transitions. [2020-10-14 19:12:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 19:12:01,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:01,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:01,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:12:01,226 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash 160314761, now seen corresponding path program 1 times [2020-10-14 19:12:01,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:01,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293709975] [2020-10-14 19:12:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 19:12:06,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:12:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 19:12:06,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:12:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:12:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:06,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:12:06,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:12:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:12:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 19:12:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 19:12:07,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293709975] [2020-10-14 19:12:07,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:07,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:12:07,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792308776] [2020-10-14 19:12:07,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:12:07,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:07,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:12:07,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:12:07,183 INFO L87 Difference]: Start difference. First operand 57807 states and 83360 transitions. Second operand 7 states. [2020-10-14 19:12:07,311 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:09,021 INFO L93 Difference]: Finished difference Result 102955 states and 146498 transitions. [2020-10-14 19:12:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:09,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-14 19:12:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:09,204 INFO L225 Difference]: With dead ends: 102955 [2020-10-14 19:12:09,204 INFO L226 Difference]: Without dead ends: 45154 [2020-10-14 19:12:09,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45154 states. [2020-10-14 19:12:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45154 to 44260. [2020-10-14 19:12:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44260 states. [2020-10-14 19:12:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44260 states to 44260 states and 59646 transitions. [2020-10-14 19:12:10,208 INFO L78 Accepts]: Start accepts. Automaton has 44260 states and 59646 transitions. Word has length 334 [2020-10-14 19:12:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:10,209 INFO L479 AbstractCegarLoop]: Abstraction has 44260 states and 59646 transitions. [2020-10-14 19:12:10,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 44260 states and 59646 transitions. [2020-10-14 19:12:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-14 19:12:10,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:10,313 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:10,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:12:10,313 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -402791501, now seen corresponding path program 1 times [2020-10-14 19:12:10,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:10,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802497533] [2020-10-14 19:12:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 19:12:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:12:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:15,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:12:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 19:12:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:15,625 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:15,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:15,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:15,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:15,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:15,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:15,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:15,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:12:16,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 19:12:16,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:12:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 19:12:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:12:16,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:12:16,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:12:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 19:12:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:12:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:12:16,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:12:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:16,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-14 19:12:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:12:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:12:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 202 proven. 65 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 19:12:16,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802497533] [2020-10-14 19:12:16,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:16,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:16,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368124407] [2020-10-14 19:12:16,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:12:16,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:16,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:12:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:12:16,536 INFO L87 Difference]: Start difference. First operand 44260 states and 59646 transitions. Second operand 7 states. [2020-10-14 19:12:16,675 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:17,031 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:12:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:19,421 INFO L93 Difference]: Finished difference Result 94612 states and 128039 transitions. [2020-10-14 19:12:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:19,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-14 19:12:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:19,585 INFO L225 Difference]: With dead ends: 94612 [2020-10-14 19:12:19,586 INFO L226 Difference]: Without dead ends: 50256 [2020-10-14 19:12:19,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:12:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50256 states. [2020-10-14 19:12:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50256 to 50159. [2020-10-14 19:12:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50159 states. [2020-10-14 19:12:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50159 states to 50159 states and 67231 transitions. [2020-10-14 19:12:20,793 INFO L78 Accepts]: Start accepts. Automaton has 50159 states and 67231 transitions. Word has length 419 [2020-10-14 19:12:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:20,794 INFO L479 AbstractCegarLoop]: Abstraction has 50159 states and 67231 transitions. [2020-10-14 19:12:20,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 50159 states and 67231 transitions. [2020-10-14 19:12:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-14 19:12:20,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:20,913 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:20,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:12:20,913 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:20,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:20,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1356386731, now seen corresponding path program 1 times [2020-10-14 19:12:20,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:20,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682228330] [2020-10-14 19:12:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:12:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:12:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,184 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:26,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:12:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:12:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:12:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 19:12:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:12:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 19:12:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:12:26,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:12:26,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:12:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 19:12:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:12:26,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:26,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-14 19:12:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 236 proven. 73 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 19:12:26,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682228330] [2020-10-14 19:12:26,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:26,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:26,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355725626] [2020-10-14 19:12:26,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:12:26,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:26,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:12:26,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:12:26,887 INFO L87 Difference]: Start difference. First operand 50159 states and 67231 transitions. Second operand 7 states. [2020-10-14 19:12:27,118 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:12:27,268 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:12:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:31,375 INFO L93 Difference]: Finished difference Result 107463 states and 155150 transitions. [2020-10-14 19:12:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:31,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-14 19:12:31,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:31,703 INFO L225 Difference]: With dead ends: 107463 [2020-10-14 19:12:31,703 INFO L226 Difference]: Without dead ends: 57730 [2020-10-14 19:12:31,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:12:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57730 states. [2020-10-14 19:12:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57730 to 55685. [2020-10-14 19:12:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55685 states. [2020-10-14 19:12:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55685 states to 55685 states and 73415 transitions. [2020-10-14 19:12:33,329 INFO L78 Accepts]: Start accepts. Automaton has 55685 states and 73415 transitions. Word has length 433 [2020-10-14 19:12:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:33,329 INFO L479 AbstractCegarLoop]: Abstraction has 55685 states and 73415 transitions. [2020-10-14 19:12:33,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 55685 states and 73415 transitions. [2020-10-14 19:12:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-14 19:12:33,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:33,416 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:33,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:12:33,416 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1744384854, now seen corresponding path program 1 times [2020-10-14 19:12:33,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:33,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477553220] [2020-10-14 19:12:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:38,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:12:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:38,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:38,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:38,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:38,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:12:38,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:12:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:12:39,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 19:12:39,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:12:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:39,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-14 19:12:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:12:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 19:12:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:12:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:12:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:12:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 19:12:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 19:12:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:12:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 272 proven. 73 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 19:12:39,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477553220] [2020-10-14 19:12:39,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:39,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:39,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183043027] [2020-10-14 19:12:39,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:12:39,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:12:39,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:12:39,876 INFO L87 Difference]: Start difference. First operand 55685 states and 73415 transitions. Second operand 7 states. [2020-10-14 19:12:40,221 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:41,119 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:12:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:43,184 INFO L93 Difference]: Finished difference Result 102963 states and 144368 transitions. [2020-10-14 19:12:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:12:43,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-10-14 19:12:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:43,319 INFO L225 Difference]: With dead ends: 102963 [2020-10-14 19:12:43,319 INFO L226 Difference]: Without dead ends: 48118 [2020-10-14 19:12:43,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:12:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48118 states. [2020-10-14 19:12:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48118 to 42281. [2020-10-14 19:12:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42281 states. [2020-10-14 19:12:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42281 states to 42281 states and 52519 transitions. [2020-10-14 19:12:44,194 INFO L78 Accepts]: Start accepts. Automaton has 42281 states and 52519 transitions. Word has length 451 [2020-10-14 19:12:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:44,195 INFO L479 AbstractCegarLoop]: Abstraction has 42281 states and 52519 transitions. [2020-10-14 19:12:44,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 42281 states and 52519 transitions. [2020-10-14 19:12:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-14 19:12:44,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:44,541 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:44,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:12:44,541 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:44,541 INFO L82 PathProgramCache]: Analyzing trace with hash -986229410, now seen corresponding path program 1 times [2020-10-14 19:12:44,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:44,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992175007] [2020-10-14 19:12:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-14 19:12:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:12:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:12:49,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:12:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 19:12:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 19:12:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 19:12:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 19:12:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 19:12:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:12:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 19:12:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:50,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:50,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:12:50,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 19:12:50,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:50,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:12:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:50,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-14 19:12:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:12:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 608 proven. 43 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-14 19:12:50,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992175007] [2020-10-14 19:12:50,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:50,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:12:50,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817334294] [2020-10-14 19:12:50,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:50,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:50,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:50,685 INFO L87 Difference]: Start difference. First operand 42281 states and 52519 transitions. Second operand 8 states. [2020-10-14 19:12:50,834 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:12:51,163 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:51,384 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:53,622 INFO L93 Difference]: Finished difference Result 82322 states and 104092 transitions. [2020-10-14 19:12:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:12:53,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 598 [2020-10-14 19:12:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:53,701 INFO L225 Difference]: With dead ends: 82322 [2020-10-14 19:12:53,701 INFO L226 Difference]: Without dead ends: 40912 [2020-10-14 19:12:53,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:12:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40912 states. [2020-10-14 19:12:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40912 to 40385. [2020-10-14 19:12:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40385 states. [2020-10-14 19:12:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 48929 transitions. [2020-10-14 19:12:54,321 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 48929 transitions. Word has length 598 [2020-10-14 19:12:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:54,321 INFO L479 AbstractCegarLoop]: Abstraction has 40385 states and 48929 transitions. [2020-10-14 19:12:54,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 48929 transitions. [2020-10-14 19:12:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-14 19:12:54,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:54,380 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:54,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:12:54,380 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash -182819638, now seen corresponding path program 1 times [2020-10-14 19:12:54,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:54,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394672609] [2020-10-14 19:12:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:59,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:59,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-14 19:12:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:12:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:12:59,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:59,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:12:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-14 19:12:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 19:12:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:59,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:59,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:59,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:59,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:59,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:13:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:13:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 19:13:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:13:00,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:13:00,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 19:13:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-14 19:13:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 19:13:00,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 19:13:00,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 19:13:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 19:13:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:13:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:13:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-14 19:13:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:00,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:13:00,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:13:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 674 proven. 66 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 19:13:01,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394672609] [2020-10-14 19:13:01,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:01,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:01,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506019745] [2020-10-14 19:13:01,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:13:01,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:01,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:13:01,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:01,694 INFO L87 Difference]: Start difference. First operand 40385 states and 48929 transitions. Second operand 7 states. [2020-10-14 19:13:02,023 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:13:03,551 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:07,380 INFO L93 Difference]: Finished difference Result 123085 states and 160317 transitions. [2020-10-14 19:13:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:13:07,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 615 [2020-10-14 19:13:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:07,618 INFO L225 Difference]: With dead ends: 123085 [2020-10-14 19:13:07,619 INFO L226 Difference]: Without dead ends: 83604 [2020-10-14 19:13:07,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:13:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83604 states. [2020-10-14 19:13:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83604 to 81612. [2020-10-14 19:13:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81612 states. [2020-10-14 19:13:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81612 states to 81612 states and 99874 transitions. [2020-10-14 19:13:09,156 INFO L78 Accepts]: Start accepts. Automaton has 81612 states and 99874 transitions. Word has length 615 [2020-10-14 19:13:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:09,157 INFO L479 AbstractCegarLoop]: Abstraction has 81612 states and 99874 transitions. [2020-10-14 19:13:09,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:13:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 81612 states and 99874 transitions. [2020-10-14 19:13:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-14 19:13:09,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:09,298 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:09,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:13:09,298 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash -698051010, now seen corresponding path program 1 times [2020-10-14 19:13:09,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:09,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324275650] [2020-10-14 19:13:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:10,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:14,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:14,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 400 [2020-10-14 19:13:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:14,723 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:14,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:13:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:14,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:13:14,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 19:13:14,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:14,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:13:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 19:13:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:13:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-14 19:13:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:13:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 19:13:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 19:13:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 19:13:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:13:15,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:13:15,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:13:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-14 19:13:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:13:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 19:13:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:13:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-14 19:13:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:16,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:16,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:16,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:13:16,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:16,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:13:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:16,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 486 proven. 206 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-14 19:13:16,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324275650] [2020-10-14 19:13:16,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:16,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:13:16,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656202829] [2020-10-14 19:13:16,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:13:16,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:16,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:13:16,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:13:16,563 INFO L87 Difference]: Start difference. First operand 81612 states and 99874 transitions. Second operand 9 states. [2020-10-14 19:13:16,701 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:20,200 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:13:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:22,980 INFO L93 Difference]: Finished difference Result 223730 states and 302496 transitions. [2020-10-14 19:13:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:13:22,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 627 [2020-10-14 19:13:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:23,786 INFO L225 Difference]: With dead ends: 223730 [2020-10-14 19:13:23,786 INFO L226 Difference]: Without dead ends: 143137 [2020-10-14 19:13:23,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:13:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143137 states. [2020-10-14 19:13:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143137 to 135935. [2020-10-14 19:13:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135935 states. [2020-10-14 19:13:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135935 states to 135935 states and 167124 transitions. [2020-10-14 19:13:29,846 INFO L78 Accepts]: Start accepts. Automaton has 135935 states and 167124 transitions. Word has length 627 [2020-10-14 19:13:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:29,847 INFO L479 AbstractCegarLoop]: Abstraction has 135935 states and 167124 transitions. [2020-10-14 19:13:29,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:13:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 135935 states and 167124 transitions. [2020-10-14 19:13:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2020-10-14 19:13:30,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:30,122 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:30,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 19:13:30,122 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash 972731509, now seen corresponding path program 1 times [2020-10-14 19:13:30,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:30,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727065736] [2020-10-14 19:13:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking...