/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:19:32,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:19:32,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:19:32,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:19:32,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:19:32,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:19:32,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:19:32,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:19:32,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:19:32,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:19:32,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:19:32,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:19:32,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:19:32,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:19:32,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:19:32,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:19:32,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:19:32,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:19:32,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:19:32,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:19:32,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:19:32,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:19:32,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:19:32,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:19:32,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:19:32,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:19:32,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:19:32,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:19:32,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:19:32,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:19:32,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:19:32,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:19:32,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:19:32,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:19:32,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:19:32,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:19:32,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:19:32,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:19:32,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:19:32,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:19:32,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:19:32,196 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 04:19:32,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:19:32,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:19:32,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:19:32,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:19:32,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:19:32,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:19:32,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:19:32,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:19:32,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:19:32,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:19:32,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:19:32,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:19:32,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:19:32,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:19:32,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:19:32,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:19:32,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:19:32,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:19:32,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:19:32,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:19:32,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:19:32,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:19:32,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:19:32,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:19:32,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:19:32,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:19:32,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:19:32,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:19:32,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:19:32,226 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:19:32,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:19:32,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:19:32,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:19:32,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:19:32,586 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:19:32,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-14 04:19:32,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/926895a34/571865e50467467c8c9ce1856374bd0d/FLAG813f5ba24 [2020-10-14 04:19:33,330 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:19:33,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-14 04:19:33,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/926895a34/571865e50467467c8c9ce1856374bd0d/FLAG813f5ba24 [2020-10-14 04:19:33,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/926895a34/571865e50467467c8c9ce1856374bd0d [2020-10-14 04:19:33,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:19:33,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:19:33,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:33,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:19:33,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:19:33,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:33" (1/1) ... [2020-10-14 04:19:33,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33dfb059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:33, skipping insertion in model container [2020-10-14 04:19:33,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:33" (1/1) ... [2020-10-14 04:19:33,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:19:33,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:19:34,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:34,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:19:35,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:35,357 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:19:35,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35 WrapperNode [2020-10-14 04:19:35,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:35,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:19:35,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:19:35,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:19:35,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (1/1) ... [2020-10-14 04:19:35,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:19:35,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:19:35,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:19:35,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:19:35,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (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 04:19:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:19:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:19:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:19:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:19:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:19:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:19:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:19:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:19:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:19:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:19:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:19:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:19:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:19:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:19:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:19:41,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:19:41,948 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:19:41,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:41 BoogieIcfgContainer [2020-10-14 04:19:41,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:19:41,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:19:41,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:19:41,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:19:41,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:19:33" (1/3) ... [2020-10-14 04:19:41,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46527520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:41, skipping insertion in model container [2020-10-14 04:19:41,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:35" (2/3) ... [2020-10-14 04:19:41,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46527520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:41, skipping insertion in model container [2020-10-14 04:19:41,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:41" (3/3) ... [2020-10-14 04:19:41,982 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2020-10-14 04:19:41,996 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:19:42,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:19:42,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:19:42,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:19:42,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:19:42,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:19:42,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:19:42,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:19:42,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:19:42,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:19:42,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:19:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:19:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:19:42,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:42,119 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] [2020-10-14 04:19:42,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2095199465, now seen corresponding path program 1 times [2020-10-14 04:19:42,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:42,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001399444] [2020-10-14 04:19:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:42,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:42,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:19:42,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 04:19:42,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:42,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:42,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:42,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:19:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:19:42,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:42,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:42,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:42,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:19:42,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:42,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:19:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:42,773 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 04:19:42,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001399444] [2020-10-14 04:19:42,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:19:42,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:19:42,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227850727] [2020-10-14 04:19:42,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:19:42,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:42,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:19:42,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:19:42,802 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:19:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:50,574 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:19:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:50,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 04:19:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:50,637 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:19:50,638 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:19:50,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:19:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:19:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:19:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:19:50,877 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 26 [2020-10-14 04:19:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:50,878 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:19:50,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:19:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:19:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:19:50,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:50,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:50,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:19:50,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:50,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:50,889 INFO L82 PathProgramCache]: Analyzing trace with hash 978092004, now seen corresponding path program 1 times [2020-10-14 04:19:50,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:50,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934272799] [2020-10-14 04:19:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:51,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:51,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:19:51,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:19:51,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-14 04:19:51,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:51,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:19:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:19:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:19:51,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:51,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:51,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:51,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:19:51,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:19:51,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:51,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:19:51,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:51,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934272799] [2020-10-14 04:19:51,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:51,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:51,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435052607] [2020-10-14 04:19:51,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:51,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:51,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:51,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:51,897 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:20:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:00,562 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-14 04:20:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:00,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 04:20:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:00,582 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:20:00,582 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:20:00,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:20:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:20:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:20:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-14 04:20:00,682 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 96 [2020-10-14 04:20:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:00,684 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-14 04:20:00,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-14 04:20:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 04:20:00,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:00,696 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:20:00,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:20:00,696 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:00,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1410584092, now seen corresponding path program 1 times [2020-10-14 04:20:00,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:00,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619200819] [2020-10-14 04:20:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:01,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:01,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:20:01,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 04:20:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:01,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:20:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:20:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:01,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:01,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:01,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:01,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:01,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:01,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:01,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:01,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:20:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:01,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 04:20:01,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:01,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:20:01,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:01,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619200819] [2020-10-14 04:20:01,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:01,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:20:01,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488614430] [2020-10-14 04:20:01,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:20:01,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:01,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:20:01,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:01,606 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 6 states. [2020-10-14 04:20:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:09,968 INFO L93 Difference]: Finished difference Result 7135 states and 10362 transitions. [2020-10-14 04:20:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:09,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-14 04:20:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:09,999 INFO L225 Difference]: With dead ends: 7135 [2020-10-14 04:20:09,999 INFO L226 Difference]: Without dead ends: 4288 [2020-10-14 04:20:10,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2020-10-14 04:20:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 4284. [2020-10-14 04:20:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4284 states. [2020-10-14 04:20:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6259 transitions. [2020-10-14 04:20:10,170 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6259 transitions. Word has length 100 [2020-10-14 04:20:10,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:10,172 INFO L479 AbstractCegarLoop]: Abstraction has 4284 states and 6259 transitions. [2020-10-14 04:20:10,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:20:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6259 transitions. [2020-10-14 04:20:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 04:20:10,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:10,186 INFO L422 BasicCegarLoop]: trace histogram [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 04:20:10,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:20:10,186 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash 732317436, now seen corresponding path program 1 times [2020-10-14 04:20:10,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:10,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863576638] [2020-10-14 04:20:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:11,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 04:20:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-14 04:20:11,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:11,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:20:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:20:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 04:20:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:11,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:11,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:11,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:11,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:11,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:11,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:11,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:11,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:20:11,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:11,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:20:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:11,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863576638] [2020-10-14 04:20:11,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:11,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:20:11,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622413819] [2020-10-14 04:20:11,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:20:11,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:11,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:20:11,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:11,284 INFO L87 Difference]: Start difference. First operand 4284 states and 6259 transitions. Second operand 6 states. [2020-10-14 04:20:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:25,483 INFO L93 Difference]: Finished difference Result 12823 states and 20078 transitions. [2020-10-14 04:20:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:20:25,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-14 04:20:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:25,527 INFO L225 Difference]: With dead ends: 12823 [2020-10-14 04:20:25,528 INFO L226 Difference]: Without dead ends: 8545 [2020-10-14 04:20:25,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:20:25,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2020-10-14 04:20:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 7831. [2020-10-14 04:20:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-14 04:20:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 11419 transitions. [2020-10-14 04:20:25,728 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 11419 transitions. Word has length 116 [2020-10-14 04:20:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:25,731 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 11419 transitions. [2020-10-14 04:20:25,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:20:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 11419 transitions. [2020-10-14 04:20:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 04:20:25,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:25,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:25,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:20:25,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1462918212, now seen corresponding path program 1 times [2020-10-14 04:20:25,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:25,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865642326] [2020-10-14 04:20:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:26,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:26,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 04:20:26,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 04:20:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:26,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:20:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:20:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 04:20:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:26,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:26,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:26,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:26,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:20:26,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:26,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:20:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:26,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:20:26,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 04:20:26,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:26,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 04:20:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:26,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865642326] [2020-10-14 04:20:26,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:20:26,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:20:26,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122984809] [2020-10-14 04:20:26,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:26,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:26,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:26,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:26,702 INFO L87 Difference]: Start difference. First operand 7831 states and 11419 transitions. Second operand 7 states. [2020-10-14 04:20:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:37,079 INFO L93 Difference]: Finished difference Result 23694 states and 35363 transitions. [2020-10-14 04:20:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:20:37,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-14 04:20:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:37,145 INFO L225 Difference]: With dead ends: 23694 [2020-10-14 04:20:37,145 INFO L226 Difference]: Without dead ends: 15869 [2020-10-14 04:20:37,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:20:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15869 states. [2020-10-14 04:20:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15869 to 12991. [2020-10-14 04:20:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12991 states. [2020-10-14 04:20:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 17565 transitions. [2020-10-14 04:20:37,521 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 17565 transitions. Word has length 176 [2020-10-14 04:20:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:37,522 INFO L479 AbstractCegarLoop]: Abstraction has 12991 states and 17565 transitions. [2020-10-14 04:20:37,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 17565 transitions. [2020-10-14 04:20:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 04:20:37,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:37,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:37,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:20:37,526 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1388897450, now seen corresponding path program 1 times [2020-10-14 04:20:37,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:37,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882440934] [2020-10-14 04:20:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:40,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:40,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 04:20:40,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2552 [2020-10-14 04:20:40,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:40,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:20:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:20:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:40,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:40,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:40,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:40,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:40,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:40,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:20:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:40,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:20:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:40,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:20:40,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:40,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 04:20:40,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:40,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:20:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:40,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882440934] [2020-10-14 04:20:40,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:40,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:40,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171750999] [2020-10-14 04:20:40,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:40,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:40,629 INFO L87 Difference]: Start difference. First operand 12991 states and 17565 transitions. Second operand 7 states. [2020-10-14 04:20:51,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:51,883 INFO L93 Difference]: Finished difference Result 29166 states and 40265 transitions. [2020-10-14 04:20:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:20:51,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-14 04:20:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:51,945 INFO L225 Difference]: With dead ends: 29166 [2020-10-14 04:20:51,946 INFO L226 Difference]: Without dead ends: 16181 [2020-10-14 04:20:51,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:20:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16181 states. [2020-10-14 04:20:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16181 to 16047. [2020-10-14 04:20:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16047 states. [2020-10-14 04:20:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16047 states to 16047 states and 20303 transitions. [2020-10-14 04:20:52,380 INFO L78 Accepts]: Start accepts. Automaton has 16047 states and 20303 transitions. Word has length 205 [2020-10-14 04:20:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:52,381 INFO L479 AbstractCegarLoop]: Abstraction has 16047 states and 20303 transitions. [2020-10-14 04:20:52,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 16047 states and 20303 transitions. [2020-10-14 04:20:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 04:20:52,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:52,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:52,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:20:52,386 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:52,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1606037497, now seen corresponding path program 1 times [2020-10-14 04:20:52,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:52,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251886514] [2020-10-14 04:20:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:57,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:20:57,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 04:20:57,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:57,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:20:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:20:57,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:57,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:57,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:57,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:20:57,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 04:20:57,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:57,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:20:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 04:20:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:20:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:20:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:57,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:20:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:57,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251886514] [2020-10-14 04:20:57,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:57,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:57,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136897343] [2020-10-14 04:20:57,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:57,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:57,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:57,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:57,896 INFO L87 Difference]: Start difference. First operand 16047 states and 20303 transitions. Second operand 7 states. [2020-10-14 04:21:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:08,895 INFO L93 Difference]: Finished difference Result 36009 states and 46709 transitions. [2020-10-14 04:21:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:21:08,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-14 04:21:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:08,958 INFO L225 Difference]: With dead ends: 36009 [2020-10-14 04:21:08,958 INFO L226 Difference]: Without dead ends: 17687 [2020-10-14 04:21:08,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:21:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17687 states. [2020-10-14 04:21:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17687 to 17618. [2020-10-14 04:21:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17618 states. [2020-10-14 04:21:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17618 states to 17618 states and 20402 transitions. [2020-10-14 04:21:09,313 INFO L78 Accepts]: Start accepts. Automaton has 17618 states and 20402 transitions. Word has length 212 [2020-10-14 04:21:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:09,313 INFO L479 AbstractCegarLoop]: Abstraction has 17618 states and 20402 transitions. [2020-10-14 04:21:09,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 17618 states and 20402 transitions. [2020-10-14 04:21:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 04:21:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:09,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:09,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:21:09,319 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -688469771, now seen corresponding path program 1 times [2020-10-14 04:21:09,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:09,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305935947] [2020-10-14 04:21:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 04:21:11,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:21:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2352 [2020-10-14 04:21:11,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:11,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 04:21:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:21:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:11,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:11,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:11,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:11,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:11,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:11,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:11,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:11,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:21:11,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:21:11,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:11,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 04:21:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 04:21:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:12,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:21:12,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:21:12,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:12,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:21:12,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:21:12,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305935947] [2020-10-14 04:21:12,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:12,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:12,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432642690] [2020-10-14 04:21:12,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:12,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:12,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:12,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:12,140 INFO L87 Difference]: Start difference. First operand 17618 states and 20402 transitions. Second operand 7 states. [2020-10-14 04:21:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:25,383 INFO L93 Difference]: Finished difference Result 49140 states and 60233 transitions. [2020-10-14 04:21:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:25,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-14 04:21:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:25,488 INFO L225 Difference]: With dead ends: 49140 [2020-10-14 04:21:25,488 INFO L226 Difference]: Without dead ends: 31528 [2020-10-14 04:21:25,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31528 states. [2020-10-14 04:21:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31528 to 31314. [2020-10-14 04:21:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31314 states. [2020-10-14 04:21:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31314 states to 31314 states and 35630 transitions. [2020-10-14 04:21:26,079 INFO L78 Accepts]: Start accepts. Automaton has 31314 states and 35630 transitions. Word has length 226 [2020-10-14 04:21:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:26,080 INFO L479 AbstractCegarLoop]: Abstraction has 31314 states and 35630 transitions. [2020-10-14 04:21:26,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 31314 states and 35630 transitions. [2020-10-14 04:21:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 04:21:26,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:26,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:26,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:21:26,086 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1240365695, now seen corresponding path program 1 times [2020-10-14 04:21:26,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:26,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713713314] [2020-10-14 04:21:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:26,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 04:21:28,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:21:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2474 [2020-10-14 04:21:28,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:28,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:21:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:28,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:28,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:28,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:28,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:28,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:28,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:28,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 04:21:28,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:28,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:29,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:29,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:21:29,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:21:29,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:29,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:21:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:21:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:21:29,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713713314] [2020-10-14 04:21:29,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:29,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:29,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795317188] [2020-10-14 04:21:29,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:29,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:29,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:29,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:29,261 INFO L87 Difference]: Start difference. First operand 31314 states and 35630 transitions. Second operand 7 states. [2020-10-14 04:21:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:38,506 INFO L93 Difference]: Finished difference Result 71128 states and 82877 transitions. [2020-10-14 04:21:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:21:38,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-14 04:21:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:38,597 INFO L225 Difference]: With dead ends: 71128 [2020-10-14 04:21:38,597 INFO L226 Difference]: Without dead ends: 41238 [2020-10-14 04:21:38,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:21:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41238 states. [2020-10-14 04:21:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41238 to 41204. [2020-10-14 04:21:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41204 states. [2020-10-14 04:21:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41204 states to 41204 states and 46904 transitions. [2020-10-14 04:21:39,322 INFO L78 Accepts]: Start accepts. Automaton has 41204 states and 46904 transitions. Word has length 246 [2020-10-14 04:21:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:39,323 INFO L479 AbstractCegarLoop]: Abstraction has 41204 states and 46904 transitions. [2020-10-14 04:21:39,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 41204 states and 46904 transitions. [2020-10-14 04:21:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-14 04:21:39,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:39,339 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 04:21:39,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:21:39,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1538066535, now seen corresponding path program 1 times [2020-10-14 04:21:39,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:39,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560089353] [2020-10-14 04:21:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-14 04:21:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4764 [2020-10-14 04:21:44,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:44,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:21:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 04:21:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:44,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:44,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:44,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:44,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:44,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:21:44,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:21:44,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:44,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:44,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:44,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:21:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:44,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:44,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:44,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:21:44,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:21:44,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:44,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:44,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:44,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:21:44,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:21:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:21:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 04:21:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:44,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 04:21:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:21:44,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560089353] [2020-10-14 04:21:44,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:44,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:44,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742909427] [2020-10-14 04:21:44,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:44,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:44,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:44,855 INFO L87 Difference]: Start difference. First operand 41204 states and 46904 transitions. Second operand 7 states. [2020-10-14 04:21:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:55,471 INFO L93 Difference]: Finished difference Result 93468 states and 112977 transitions. [2020-10-14 04:21:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:55,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-14 04:21:55,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:55,671 INFO L225 Difference]: With dead ends: 93468 [2020-10-14 04:21:55,672 INFO L226 Difference]: Without dead ends: 53690 [2020-10-14 04:21:55,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53690 states. [2020-10-14 04:21:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53690 to 53248. [2020-10-14 04:21:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53248 states. [2020-10-14 04:21:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53248 states to 53248 states and 60142 transitions. [2020-10-14 04:21:56,642 INFO L78 Accepts]: Start accepts. Automaton has 53248 states and 60142 transitions. Word has length 361 [2020-10-14 04:21:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:56,643 INFO L479 AbstractCegarLoop]: Abstraction has 53248 states and 60142 transitions. [2020-10-14 04:21:56,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 53248 states and 60142 transitions. [2020-10-14 04:21:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 04:21:56,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:56,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:56,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:21:56,657 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:56,658 INFO L82 PathProgramCache]: Analyzing trace with hash -375961026, now seen corresponding path program 1 times [2020-10-14 04:21:56,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:56,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873833560] [2020-10-14 04:21:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:56,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:00,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 04:22:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3372 [2020-10-14 04:22:00,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:00,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:22:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 04:22:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:00,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:00,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:22:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:00,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:00,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:22:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:22:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:22:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 04:22:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:00,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 04:22:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:22:00,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873833560] [2020-10-14 04:22:00,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:00,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:00,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009317492] [2020-10-14 04:22:00,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:00,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:00,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:00,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:00,937 INFO L87 Difference]: Start difference. First operand 53248 states and 60142 transitions. Second operand 7 states. [2020-10-14 04:22:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:12,290 INFO L93 Difference]: Finished difference Result 118848 states and 139442 transitions. [2020-10-14 04:22:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:22:12,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-14 04:22:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:12,533 INFO L225 Difference]: With dead ends: 118848 [2020-10-14 04:22:12,534 INFO L226 Difference]: Without dead ends: 67028 [2020-10-14 04:22:12,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:22:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67028 states. [2020-10-14 04:22:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67028 to 65248. [2020-10-14 04:22:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65248 states. [2020-10-14 04:22:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65248 states to 65248 states and 72976 transitions. [2020-10-14 04:22:15,105 INFO L78 Accepts]: Start accepts. Automaton has 65248 states and 72976 transitions. Word has length 371 [2020-10-14 04:22:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:15,106 INFO L479 AbstractCegarLoop]: Abstraction has 65248 states and 72976 transitions. [2020-10-14 04:22:15,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 65248 states and 72976 transitions. [2020-10-14 04:22:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-14 04:22:15,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:15,123 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 04:22:15,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:22:15,123 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:15,124 INFO L82 PathProgramCache]: Analyzing trace with hash -355938890, now seen corresponding path program 1 times [2020-10-14 04:22:15,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:15,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143510829] [2020-10-14 04:22:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:20,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 04:22:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 04:22:20,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:20,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:20,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:20,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:20,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:20,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:20,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:20,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:22:20,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:20,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:22:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:20,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:20,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:22:20,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:22:20,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:20,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:22:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 04:22:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:20,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:20,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:22:20,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:20,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:22:20,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:20,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 04:22:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 04:22:20,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143510829] [2020-10-14 04:22:20,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:20,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:20,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077657096] [2020-10-14 04:22:20,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:20,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:20,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:20,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:20,867 INFO L87 Difference]: Start difference. First operand 65248 states and 72976 transitions. Second operand 7 states. [2020-10-14 04:22:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:31,123 INFO L93 Difference]: Finished difference Result 131211 states and 146961 transitions. [2020-10-14 04:22:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:31,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-14 04:22:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:31,261 INFO L225 Difference]: With dead ends: 131211 [2020-10-14 04:22:31,261 INFO L226 Difference]: Without dead ends: 64551 [2020-10-14 04:22:31,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64551 states. [2020-10-14 04:22:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64551 to 63129. [2020-10-14 04:22:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63129 states. [2020-10-14 04:22:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63129 states to 63129 states and 68962 transitions. [2020-10-14 04:22:32,423 INFO L78 Accepts]: Start accepts. Automaton has 63129 states and 68962 transitions. Word has length 398 [2020-10-14 04:22:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:32,424 INFO L479 AbstractCegarLoop]: Abstraction has 63129 states and 68962 transitions. [2020-10-14 04:22:32,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 63129 states and 68962 transitions. [2020-10-14 04:22:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-14 04:22:32,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:32,440 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 04:22:32,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:22:32,440 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1933302028, now seen corresponding path program 1 times [2020-10-14 04:22:32,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:32,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570830738] [2020-10-14 04:22:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:34,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-14 04:22:34,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2257 [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 04:22:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:34,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:34,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:22:34,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:34,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:34,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:22:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:34,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:22:34,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:22:34,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:34,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:22:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:22:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:35,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:35,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:22:35,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 04:22:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:22:35,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570830738] [2020-10-14 04:22:35,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:35,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:35,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574480306] [2020-10-14 04:22:35,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:35,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:35,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:35,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:35,836 INFO L87 Difference]: Start difference. First operand 63129 states and 68962 transitions. Second operand 7 states. [2020-10-14 04:22:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:45,559 INFO L93 Difference]: Finished difference Result 134823 states and 149185 transitions. [2020-10-14 04:22:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:45,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-14 04:22:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:45,699 INFO L225 Difference]: With dead ends: 134823 [2020-10-14 04:22:45,699 INFO L226 Difference]: Without dead ends: 73122 [2020-10-14 04:22:45,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73122 states. [2020-10-14 04:22:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73122 to 73045. [2020-10-14 04:22:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73045 states. [2020-10-14 04:22:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73045 states to 73045 states and 79594 transitions. [2020-10-14 04:22:46,616 INFO L78 Accepts]: Start accepts. Automaton has 73045 states and 79594 transitions. Word has length 410 [2020-10-14 04:22:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:46,617 INFO L479 AbstractCegarLoop]: Abstraction has 73045 states and 79594 transitions. [2020-10-14 04:22:46,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 73045 states and 79594 transitions. [2020-10-14 04:22:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-14 04:22:46,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:46,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 04:22:46,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:22:46,633 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:46,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1892304930, now seen corresponding path program 1 times [2020-10-14 04:22:46,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:46,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498554798] [2020-10-14 04:22:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:51,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-14 04:22:51,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 04:22:51,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:51,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-14 04:22:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 04:22:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:51,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:51,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:51,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:51,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:51,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:51,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:22:51,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:51,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:51,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:22:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:51,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:51,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:22:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:51,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:22:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:22:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:51,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:22:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:52,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:22:52,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 04:22:52,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 04:22:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-14 04:22:52,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498554798] [2020-10-14 04:22:52,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:52,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883094992] [2020-10-14 04:22:52,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:52,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:52,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:52,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:52,743 INFO L87 Difference]: Start difference. First operand 73045 states and 79594 transitions. Second operand 7 states. [2020-10-14 04:23:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:07,148 INFO L93 Difference]: Finished difference Result 147513 states and 162001 transitions. [2020-10-14 04:23:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:23:07,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 483 [2020-10-14 04:23:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:07,279 INFO L225 Difference]: With dead ends: 147513 [2020-10-14 04:23:07,279 INFO L226 Difference]: Without dead ends: 75898 [2020-10-14 04:23:07,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:23:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75898 states. [2020-10-14 04:23:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75898 to 75865. [2020-10-14 04:23:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75865 states. [2020-10-14 04:23:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75865 states to 75865 states and 82358 transitions. [2020-10-14 04:23:08,336 INFO L78 Accepts]: Start accepts. Automaton has 75865 states and 82358 transitions. Word has length 483 [2020-10-14 04:23:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:08,337 INFO L479 AbstractCegarLoop]: Abstraction has 75865 states and 82358 transitions. [2020-10-14 04:23:08,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 75865 states and 82358 transitions. [2020-10-14 04:23:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-10-14 04:23:08,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:08,360 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:23:08,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:23:08,360 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:08,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1510279389, now seen corresponding path program 1 times [2020-10-14 04:23:08,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:08,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100934249] [2020-10-14 04:23:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:08,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:13,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 583 [2020-10-14 04:23:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:23:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 04:23:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:13,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:23:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-10-14 04:23:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:23:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:13,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:13,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:23:13,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:23:13,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:13,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:13,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:23:13,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:23:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:13,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:13,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 04:23:13,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 04:23:13,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:13,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-14 04:23:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-14 04:23:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:14,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 148 proven. 222 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 04:23:14,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100934249] [2020-10-14 04:23:14,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:14,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:14,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318263757] [2020-10-14 04:23:14,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:14,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:14,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:14,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:14,222 INFO L87 Difference]: Start difference. First operand 75865 states and 82358 transitions. Second operand 7 states.