/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/reducercommutativity/sum20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:41:41,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:41:41,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:41:41,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:41:41,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:41:41,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:41:41,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:41:41,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:41:41,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:41:41,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:41:41,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:41:41,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:41:41,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:41:41,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:41:41,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:41:41,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:41:41,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:41:41,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:41:41,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:41:41,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:41:41,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:41:41,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:41:41,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:41:41,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:41:41,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:41:41,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:41:41,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:41:41,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:41:41,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:41:41,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:41:41,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:41:41,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:41:41,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:41:41,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:41:41,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:41:41,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:41:41,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:41:41,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:41:41,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:41:41,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:41:41,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:41:41,220 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 07:41:41,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:41:41,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:41:41,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:41:41,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:41:41,272 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:41:41,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:41:41,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:41:41,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:41:41,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:41:41,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:41:41,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:41:41,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:41:41,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:41:41,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:41:41,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:41:41,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:41:41,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:41:41,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:41:41,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:41:41,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:41:41,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:41:41,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:41:41,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:41:41,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:41:41,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:41:41,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:41:41,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:41:41,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:41:41,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:41:41,280 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 07:41:41,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:41:41,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:41:41,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:41:41,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:41:41,604 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:41:41,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-14 07:41:41,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15445a571/640f56add1ad4616975b42620a75665a/FLAGaee84381a [2020-10-14 07:41:42,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:41:42,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-14 07:41:42,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15445a571/640f56add1ad4616975b42620a75665a/FLAGaee84381a [2020-10-14 07:41:42,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15445a571/640f56add1ad4616975b42620a75665a [2020-10-14 07:41:42,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:41:42,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:41:42,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:41:42,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:41:42,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:41:42,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42, skipping insertion in model container [2020-10-14 07:41:42,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:41:42,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:41:42,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:41:42,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:41:42,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:41:42,782 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:41:42,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42 WrapperNode [2020-10-14 07:41:42,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:41:42,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:41:42,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:41:42,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:41:42,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (1/1) ... [2020-10-14 07:41:42,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:41:42,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:41:42,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:41:42,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:41:42,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (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 07:41:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:41:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:41:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-14 07:41:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:41:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:41:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:41:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-14 07:41:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:41:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:41:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:41:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:41:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:41:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:41:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:41:43,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:41:43,213 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:41:43,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:43 BoogieIcfgContainer [2020-10-14 07:41:43,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:41:43,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:41:43,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:41:43,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:41:43,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:41:42" (1/3) ... [2020-10-14 07:41:43,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf3811f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:43, skipping insertion in model container [2020-10-14 07:41:43,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:42" (2/3) ... [2020-10-14 07:41:43,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf3811f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:43, skipping insertion in model container [2020-10-14 07:41:43,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:43" (3/3) ... [2020-10-14 07:41:43,225 INFO L109 eAbstractionObserver]: Analyzing ICFG sum20-2.i [2020-10-14 07:41:43,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:41:43,243 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:41:43,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:41:43,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:41:43,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:41:43,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:41:43,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:41:43,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:41:43,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:41:43,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:41:43,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:41:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 07:41:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:41:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:43,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:41:43,347 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-14 07:41:43,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:43,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146836225] [2020-10-14 07:41:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-14 07:41:44,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:41:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:41:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:41:44,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:44,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:41:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:41:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:41:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:41:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:41:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:41:44,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 07:41:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146836225] [2020-10-14 07:41:44,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:44,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 07:41:44,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068642911] [2020-10-14 07:41:44,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:41:44,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:44,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:41:44,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:41:44,720 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-14 07:41:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:44,848 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-14 07:41:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:41:44,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:41:44,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:44,859 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:41:44,859 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 07:41:44,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:41:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 07:41:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 07:41:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:41:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 07:41:44,905 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-14 07:41:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:44,906 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 07:41:44,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:41:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 07:41:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:41:44,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:44,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:41:44,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:41:44,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-14 07:41:44,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:44,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896524990] [2020-10-14 07:41:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:46,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:46,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-14 07:41:46,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:46,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:46,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:41:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:46,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:46,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:41:46,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:46,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:46,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:46,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:46,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:46,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:46,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:46,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:46,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:46,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:41:46,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:46,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:41:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:46,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:41:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:46,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:41:46,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896524990] [2020-10-14 07:41:46,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:46,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:41:46,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815589565] [2020-10-14 07:41:46,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:46,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:46,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:46,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:46,168 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-14 07:41:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:46,268 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 07:41:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:46,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:41:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:46,270 INFO L225 Difference]: With dead ends: 45 [2020-10-14 07:41:46,270 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:41:46,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 07:41:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:41:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 07:41:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 07:41:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 07:41:46,279 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 07:41:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:46,279 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 07:41:46,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 07:41:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 07:41:46,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:46,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:41:46,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:41:46,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-14 07:41:46,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:46,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63357241] [2020-10-14 07:41:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:41:48,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:41:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2260 [2020-10-14 07:41:48,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:48,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:48,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:41:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:48,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:48,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:41:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:48,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:41:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:48,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:41:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:41:48,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:48,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:41:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:41:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:48,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:41:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:48,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:41:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 07:41:48,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63357241] [2020-10-14 07:41:48,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:41:48,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:41:48,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401420959] [2020-10-14 07:41:48,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:48,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:48,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:48,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:48,680 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-14 07:41:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:48,775 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-14 07:41:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:48,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 07:41:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:48,778 INFO L225 Difference]: With dead ends: 48 [2020-10-14 07:41:48,779 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 07:41:48,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 07:41:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 07:41:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:41:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 07:41:48,794 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-14 07:41:48,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:48,794 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 07:41:48,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 07:41:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 07:41:48,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:48,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 07:41:48,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:41:48,800 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1462689141, now seen corresponding path program 1 times [2020-10-14 07:41:48,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:48,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873295689] [2020-10-14 07:41:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:52,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:41:52,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:41:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-14 07:41:52,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:52,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:41:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:52,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:52,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:52,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:52,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:52,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:52,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:52,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:41:52,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:52,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:41:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:41:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:52,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:52,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:52,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:52,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:41:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:53,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:41:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 07:41:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873295689] [2020-10-14 07:41:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:41:53,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:41:53,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785944809] [2020-10-14 07:41:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:53,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:53,007 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-14 07:41:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:53,069 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 07:41:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:53,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 07:41:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:53,071 INFO L225 Difference]: With dead ends: 43 [2020-10-14 07:41:53,071 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:41:53,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:41:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:41:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:41:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 07:41:53,078 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-14 07:41:53,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:53,080 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 07:41:53,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 07:41:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:41:53,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:53,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 07:41:53,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:41:53,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -233991671, now seen corresponding path program 1 times [2020-10-14 07:41:53,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:53,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162835614] [2020-10-14 07:41:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:58,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:41:58,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:41:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:41:58,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:58,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 07:41:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:41:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:58,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:58,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:58,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:41:58,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:58,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:41:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:41:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:58,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:41:58,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:58,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:41:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:41:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:41:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:41:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:58,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:41:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:41:58,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162835614] [2020-10-14 07:41:58,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:58,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:41:58,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806178058] [2020-10-14 07:41:58,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:41:58,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:41:58,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:58,206 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-14 07:41:58,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:58,307 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-14 07:41:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:41:58,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-14 07:41:58,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:58,309 INFO L225 Difference]: With dead ends: 51 [2020-10-14 07:41:58,309 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:41:58,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:41:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:41:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 07:41:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:41:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 07:41:58,321 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-14 07:41:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:58,321 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 07:41:58,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:41:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 07:41:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:41:58,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:58,323 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 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 07:41:58,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:41:58,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash -571391385, now seen corresponding path program 2 times [2020-10-14 07:41:58,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:58,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967274261] [2020-10-14 07:41:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:42:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:42:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:03,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:42:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:03,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:03,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:03,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:03,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:42:03,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:03,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:42:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:03,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:03,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:42:03,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:03,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:42:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:42:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:03,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:42:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:03,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:42:03,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:42:03,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:03,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:03,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 07:42:03,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967274261] [2020-10-14 07:42:03,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:03,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:42:03,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458726461] [2020-10-14 07:42:03,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:03,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:03,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:03,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:03,461 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-14 07:42:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:03,567 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-14 07:42:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:03,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-14 07:42:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:03,569 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:42:03,569 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 07:42:03,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 07:42:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 07:42:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:42:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 07:42:03,575 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-14 07:42:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:03,576 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 07:42:03,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 07:42:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:42:03,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:03,577 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 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 07:42:03,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:42:03,578 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1621390405, now seen corresponding path program 3 times [2020-10-14 07:42:03,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:03,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893183874] [2020-10-14 07:42:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:42:08,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:42:08,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:08,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:42:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:08,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:08,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:08,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:08,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:08,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:08,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:42:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:08,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:08,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:42:08,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:08,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:42:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:08,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:42:08,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:08,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:08,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:42:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:08,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:08,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:08,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:42:08,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:08,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:42:08,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893183874] [2020-10-14 07:42:08,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:08,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:42:08,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280466812] [2020-10-14 07:42:08,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:42:08,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:08,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:42:08,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:08,740 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-14 07:42:08,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:08,827 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 07:42:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:42:08,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 07:42:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:08,828 INFO L225 Difference]: With dead ends: 60 [2020-10-14 07:42:08,828 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 07:42:08,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 07:42:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 07:42:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:42:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 07:42:08,837 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-14 07:42:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:08,837 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 07:42:08,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:42:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 07:42:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 07:42:08,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:08,839 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:08,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:42:08,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:08,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1668924633, now seen corresponding path program 4 times [2020-10-14 07:42:08,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:08,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592459238] [2020-10-14 07:42:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:09,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:13,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 07:42:13,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:42:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:13,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:13,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:13,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:13,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:13,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:42:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:13,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:42:13,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:13,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:42:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:42:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:13,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:13,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 07:42:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:42:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:13,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:42:13,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592459238] [2020-10-14 07:42:13,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:13,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:42:13,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161524513] [2020-10-14 07:42:13,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:13,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:13,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:13,984 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-14 07:42:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:14,081 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-14 07:42:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:14,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 07:42:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:14,083 INFO L225 Difference]: With dead ends: 62 [2020-10-14 07:42:14,083 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:42:14,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:42:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 07:42:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 07:42:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 07:42:14,091 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-14 07:42:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:14,091 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 07:42:14,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 07:42:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 07:42:14,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:14,095 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 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 07:42:14,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:42:14,096 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1729221001, now seen corresponding path program 5 times [2020-10-14 07:42:14,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:14,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575953971] [2020-10-14 07:42:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:19,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:42:19,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:42:19,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:19,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 07:42:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:42:19,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:19,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:19,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:19,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:19,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:19,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:19,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:42:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:19,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:42:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:42:19,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:19,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:42:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:42:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:19,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 07:42:19,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575953971] [2020-10-14 07:42:19,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:19,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:42:19,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235005861] [2020-10-14 07:42:19,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:42:19,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:19,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:42:19,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:19,243 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-14 07:42:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:19,313 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-14 07:42:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:42:19,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 07:42:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:19,315 INFO L225 Difference]: With dead ends: 57 [2020-10-14 07:42:19,315 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 07:42:19,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 07:42:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 07:42:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:42:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 07:42:19,324 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-14 07:42:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:19,326 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 07:42:19,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:42:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 07:42:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:42:19,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:19,328 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:19,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:42:19,328 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1131907463, now seen corresponding path program 6 times [2020-10-14 07:42:19,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:19,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332487262] [2020-10-14 07:42:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:24,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:42:24,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:24,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:24,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:24,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:24,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:42:24,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:24,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:42:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:24,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:24,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:42:24,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:24,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:42:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:24,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:42:24,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:42:24,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:24,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:42:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 07:42:24,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332487262] [2020-10-14 07:42:24,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:24,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:24,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841108158] [2020-10-14 07:42:24,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:24,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:24,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:24,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:24,478 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-14 07:42:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:24,592 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-14 07:42:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:24,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-14 07:42:24,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:24,593 INFO L225 Difference]: With dead ends: 67 [2020-10-14 07:42:24,593 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:42:24,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:42:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:42:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 07:42:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:42:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 07:42:24,599 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-14 07:42:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:24,599 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 07:42:24,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 07:42:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 07:42:24,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:24,600 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:24,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:42:24,600 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:24,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1257799067, now seen corresponding path program 7 times [2020-10-14 07:42:24,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:24,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123514590] [2020-10-14 07:42:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:29,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 07:42:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:42:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:29,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:29,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:29,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:29,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:29,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:29,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:42:29,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:29,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:42:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 07:42:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:29,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:29,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:29,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:42:29,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:29,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:42:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:42:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:42:29,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:29,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:42:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:42:29,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123514590] [2020-10-14 07:42:29,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:29,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:29,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710288314] [2020-10-14 07:42:29,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:29,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:29,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:29,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:29,752 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-14 07:42:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:29,830 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-14 07:42:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:29,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-14 07:42:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:29,831 INFO L225 Difference]: With dead ends: 72 [2020-10-14 07:42:29,831 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:42:29,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:42:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 07:42:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 07:42:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 07:42:29,837 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-14 07:42:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:29,837 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 07:42:29,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 07:42:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 07:42:29,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:29,838 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:29,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:42:29,838 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash 236717639, now seen corresponding path program 8 times [2020-10-14 07:42:29,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:29,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340008412] [2020-10-14 07:42:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:34,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 07:42:34,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:42:34,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:34,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 07:42:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:34,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:34,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:34,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:34,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:34,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:34,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:34,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:42:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:34,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:34,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:42:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:34,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:34,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:42:34,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:34,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:34,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:42:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 07:42:34,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340008412] [2020-10-14 07:42:34,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:34,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:42:34,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793926725] [2020-10-14 07:42:34,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:34,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:34,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:34,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:34,968 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-14 07:42:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:35,034 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-14 07:42:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:35,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 07:42:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:35,036 INFO L225 Difference]: With dead ends: 65 [2020-10-14 07:42:35,036 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 07:42:35,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 07:42:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 07:42:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:42:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 07:42:35,042 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-14 07:42:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:35,043 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 07:42:35,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 07:42:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 07:42:35,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:35,047 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:35,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:42:35,048 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1582231867, now seen corresponding path program 9 times [2020-10-14 07:42:35,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:35,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148541539] [2020-10-14 07:42:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:35,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 07:42:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 07:42:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:40,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:42:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:42:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:42:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:40,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:42:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:40,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:40,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:40,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:42:40,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:40,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:42:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:42:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:42:40,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:40,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:42:40,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:40,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:42:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 07:42:40,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148541539] [2020-10-14 07:42:40,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:40,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:42:40,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240786553] [2020-10-14 07:42:40,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:42:40,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:42:40,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:40,225 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-14 07:42:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:40,363 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-14 07:42:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:40,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-14 07:42:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:40,364 INFO L225 Difference]: With dead ends: 77 [2020-10-14 07:42:40,364 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:42:40,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:42:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:42:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 07:42:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 07:42:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 07:42:40,370 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-14 07:42:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:40,371 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 07:42:40,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:42:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 07:42:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 07:42:40,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:40,372 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:40,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:42:40,372 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:40,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1792933923, now seen corresponding path program 10 times [2020-10-14 07:42:40,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:40,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18827253] [2020-10-14 07:42:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:45,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:45,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:45,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:42:45,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:42:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:42:45,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:42:45,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:42:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:42:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 07:42:45,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18827253] [2020-10-14 07:42:45,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:45,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:42:45,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688497017] [2020-10-14 07:42:45,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:42:45,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:42:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:45,525 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-14 07:42:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:45,693 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-14 07:42:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:45,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-14 07:42:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:45,695 INFO L225 Difference]: With dead ends: 81 [2020-10-14 07:42:45,695 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:42:45,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:42:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:42:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 07:42:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:42:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 07:42:45,706 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-14 07:42:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:45,707 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 07:42:45,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:42:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 07:42:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:42:45,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:45,708 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:45,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:42:45,708 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:45,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:45,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1599327487, now seen corresponding path program 11 times [2020-10-14 07:42:45,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:45,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87482584] [2020-10-14 07:42:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:42:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:50,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:42:50,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:50,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:42:50,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 07:42:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:42:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:42:50,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87482584] [2020-10-14 07:42:50,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:50,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:42:50,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121486549] [2020-10-14 07:42:50,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:42:50,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:50,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:42:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:50,885 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-14 07:42:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:50,964 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-14 07:42:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:50,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-14 07:42:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:50,966 INFO L225 Difference]: With dead ends: 86 [2020-10-14 07:42:50,966 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:42:50,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:42:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 07:42:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 07:42:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 07:42:50,973 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-14 07:42:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:50,973 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 07:42:50,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:42:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 07:42:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 07:42:50,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:50,974 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:50,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:42:50,975 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1951445731, now seen corresponding path program 12 times [2020-10-14 07:42:50,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:50,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037918411] [2020-10-14 07:42:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:42:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:56,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:42:56,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:56,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:42:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:56,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 07:42:56,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 07:42:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:56,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:42:56,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:42:56,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037918411] [2020-10-14 07:42:56,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:56,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:42:56,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995909028] [2020-10-14 07:42:56,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:42:56,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:56,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:42:56,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:56,206 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-14 07:42:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:56,336 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-14 07:42:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:56,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-14 07:42:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:56,337 INFO L225 Difference]: With dead ends: 88 [2020-10-14 07:42:56,337 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:42:56,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:42:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 07:42:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 07:42:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 07:42:56,350 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-14 07:42:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:56,350 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 07:42:56,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:42:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 07:42:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 07:42:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:56,352 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:56,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:42:56,353 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:56,354 INFO L82 PathProgramCache]: Analyzing trace with hash -254492091, now seen corresponding path program 13 times [2020-10-14 07:42:56,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:56,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184592946] [2020-10-14 07:42:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 07:43:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:43:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:01,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:01,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:43:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:43:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:43:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:43:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:43:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 07:43:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:43:01,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:43:01,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:43:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-14 07:43:01,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184592946] [2020-10-14 07:43:01,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:01,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:43:01,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989137915] [2020-10-14 07:43:01,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:43:01,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:01,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:43:01,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:43:01,624 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-14 07:43:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:01,700 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-14 07:43:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:43:01,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-14 07:43:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:01,701 INFO L225 Difference]: With dead ends: 79 [2020-10-14 07:43:01,702 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 07:43:01,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:43:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 07:43:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 07:43:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 07:43:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 07:43:01,713 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-14 07:43:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:01,714 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 07:43:01,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:43:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 07:43:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 07:43:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:01,717 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:01,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:43:01,717 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1497902269, now seen corresponding path program 14 times [2020-10-14 07:43:01,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:01,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935001982] [2020-10-14 07:43:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:43:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:43:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:43:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:43:06,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:43:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:43:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:43:06,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:43:06,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:43:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 07:43:06,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935001982] [2020-10-14 07:43:06,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:06,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:43:06,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926245548] [2020-10-14 07:43:06,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:43:06,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:06,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:43:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:06,973 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-14 07:43:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:07,195 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-14 07:43:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:43:07,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-14 07:43:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:07,197 INFO L225 Difference]: With dead ends: 93 [2020-10-14 07:43:07,197 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 07:43:07,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:43:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 07:43:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 07:43:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:43:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 07:43:07,207 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-14 07:43:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:07,207 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 07:43:07,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:43:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 07:43:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 07:43:07,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:07,210 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:07,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:43:07,210 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:07,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash -75182815, now seen corresponding path program 15 times [2020-10-14 07:43:07,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:07,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099482897] [2020-10-14 07:43:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:43:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:43:12,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:12,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:12,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:12,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:43:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:43:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:43:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 07:43:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:12,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 07:43:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:43:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-14 07:43:12,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099482897] [2020-10-14 07:43:12,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:12,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:43:12,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900213290] [2020-10-14 07:43:12,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:43:12,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:12,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:43:12,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:12,524 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-14 07:43:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:12,642 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-14 07:43:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:43:12,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-14 07:43:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:12,643 INFO L225 Difference]: With dead ends: 98 [2020-10-14 07:43:12,643 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:43:12,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:43:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 07:43:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:43:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 07:43:12,651 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-14 07:43:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:12,651 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 07:43:12,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:43:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 07:43:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 07:43:12,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:12,653 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:12,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:43:12,653 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:12,654 INFO L82 PathProgramCache]: Analyzing trace with hash 151947779, now seen corresponding path program 16 times [2020-10-14 07:43:12,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:12,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334672752] [2020-10-14 07:43:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 07:43:17,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:43:17,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:43:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 07:43:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:43:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:17,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:43:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:17,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:43:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:17,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:43:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:43:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 07:43:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:17,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:17,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:43:17,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:17,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:17,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-14 07:43:17,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334672752] [2020-10-14 07:43:17,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:17,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:43:17,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817433425] [2020-10-14 07:43:17,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:43:17,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:43:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:43:17,862 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-14 07:43:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:17,954 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-14 07:43:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:43:17,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-14 07:43:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:17,955 INFO L225 Difference]: With dead ends: 87 [2020-10-14 07:43:17,955 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 07:43:17,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:43:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 07:43:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 07:43:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:43:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 07:43:17,960 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-14 07:43:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:17,961 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 07:43:17,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:43:17,961 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 07:43:17,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 07:43:17,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:17,962 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:17,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:43:17,963 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:17,963 INFO L82 PathProgramCache]: Analyzing trace with hash 625093505, now seen corresponding path program 17 times [2020-10-14 07:43:17,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:17,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812561601] [2020-10-14 07:43:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:22,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:22,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 07:43:22,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:43:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:22,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:43:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:43:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:23,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:43:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:43:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:23,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:43:23,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:43:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 07:43:23,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-14 07:43:23,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812561601] [2020-10-14 07:43:23,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:23,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:23,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787705901] [2020-10-14 07:43:23,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:23,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:23,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:23,171 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-14 07:43:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:23,257 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-14 07:43:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:43:23,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-14 07:43:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:23,259 INFO L225 Difference]: With dead ends: 104 [2020-10-14 07:43:23,259 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 07:43:23,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 07:43:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 07:43:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 07:43:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 07:43:23,266 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-14 07:43:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:23,266 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 07:43:23,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 07:43:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 07:43:23,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:23,268 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:23,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:43:23,269 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1409374365, now seen corresponding path program 18 times [2020-10-14 07:43:23,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:23,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187308978] [2020-10-14 07:43:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:28,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 07:43:28,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:28,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:43:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:28,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:43:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:43:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:28,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:28,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:28,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:43:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:43:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:43:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:28,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-14 07:43:28,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187308978] [2020-10-14 07:43:28,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:28,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:28,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738107573] [2020-10-14 07:43:28,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:28,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:28,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:28,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:28,516 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-14 07:43:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:28,722 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-14 07:43:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:43:28,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-14 07:43:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:28,725 INFO L225 Difference]: With dead ends: 105 [2020-10-14 07:43:28,725 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:43:28,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:43:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:43:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 07:43:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 07:43:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 07:43:28,729 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-14 07:43:28,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:28,730 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 07:43:28,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 07:43:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:43:28,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:28,731 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:28,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:43:28,732 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:28,732 INFO L82 PathProgramCache]: Analyzing trace with hash 921790529, now seen corresponding path program 19 times [2020-10-14 07:43:28,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:28,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973066823] [2020-10-14 07:43:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 07:43:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:43:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:33,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:43:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:33,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:43:33,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:33,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:43:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:33,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:33,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:43:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:33,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-14 07:43:33,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973066823] [2020-10-14 07:43:33,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:33,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:43:33,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70341209] [2020-10-14 07:43:33,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:43:33,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:33,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:43:33,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:33,941 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-14 07:43:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:34,028 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-14 07:43:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:43:34,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-14 07:43:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:34,030 INFO L225 Difference]: With dead ends: 95 [2020-10-14 07:43:34,030 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 07:43:34,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 07:43:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 07:43:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 07:43:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 07:43:34,035 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-14 07:43:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:34,036 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 07:43:34,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:43:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 07:43:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 07:43:34,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:34,037 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:34,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:43:34,038 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash 415758911, now seen corresponding path program 20 times [2020-10-14 07:43:34,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:34,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047964102] [2020-10-14 07:43:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:39,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 07:43:39,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:39,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:43:39,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:39,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:43:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:39,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:39,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:39,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:43:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:43:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:39,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 07:43:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-14 07:43:39,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047964102] [2020-10-14 07:43:39,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:39,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:43:39,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668991543] [2020-10-14 07:43:39,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:43:39,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:39,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:43:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:39,297 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-14 07:43:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:39,426 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-14 07:43:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:43:39,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-14 07:43:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:39,428 INFO L225 Difference]: With dead ends: 114 [2020-10-14 07:43:39,428 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 07:43:39,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 07:43:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 07:43:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 07:43:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 07:43:39,439 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-14 07:43:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:39,439 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 07:43:39,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:43:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 07:43:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 07:43:39,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:39,441 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:39,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:43:39,441 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1202945119, now seen corresponding path program 21 times [2020-10-14 07:43:39,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:39,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773054282] [2020-10-14 07:43:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:44,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 07:43:44,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 07:43:44,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:44,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:43:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:44,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:44,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:44,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:44,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:44,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:43:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:43:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:44,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:44,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:43:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:44,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 07:43:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-14 07:43:44,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773054282] [2020-10-14 07:43:44,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:44,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:43:44,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059460475] [2020-10-14 07:43:44,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:43:44,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:44,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:43:44,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:44,716 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-14 07:43:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:44,825 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-14 07:43:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:44,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-14 07:43:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:44,826 INFO L225 Difference]: With dead ends: 116 [2020-10-14 07:43:44,827 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 07:43:44,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 07:43:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 07:43:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:43:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 07:43:44,832 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-14 07:43:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:44,832 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 07:43:44,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:43:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 07:43:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 07:43:44,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:44,833 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:44,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:43:44,834 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1999356797, now seen corresponding path program 22 times [2020-10-14 07:43:44,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:44,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229109354] [2020-10-14 07:43:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:49,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 07:43:49,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:43:49,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:43:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:43:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:49,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:49,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:49,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:49,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:43:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:49,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:43:49,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:49,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:43:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:43:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:50,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:50,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 07:43:50,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:50,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:43:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:43:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2020-10-14 07:43:50,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229109354] [2020-10-14 07:43:50,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:50,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:43:50,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723224134] [2020-10-14 07:43:50,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:43:50,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:50,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:43:50,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:50,097 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-14 07:43:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:50,315 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-14 07:43:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:43:50,315 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-14 07:43:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:50,316 INFO L225 Difference]: With dead ends: 117 [2020-10-14 07:43:50,316 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:43:50,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:43:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:43:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 07:43:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:43:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 07:43:50,323 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-14 07:43:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:50,323 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 07:43:50,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:43:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 07:43:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 07:43:50,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:50,324 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:50,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:43:50,324 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1418476447, now seen corresponding path program 23 times [2020-10-14 07:43:50,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:50,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125268670] [2020-10-14 07:43:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:55,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 07:43:55,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:43:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:55,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:55,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:55,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:43:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:55,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 07:43:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:43:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 07:43:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-14 07:43:55,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125268670] [2020-10-14 07:43:55,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:55,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:43:55,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108551332] [2020-10-14 07:43:55,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:43:55,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:55,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:43:55,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:55,616 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-14 07:43:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:55,846 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-14 07:43:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:55,846 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-14 07:43:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:55,847 INFO L225 Difference]: With dead ends: 121 [2020-10-14 07:43:55,848 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:43:55,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:43:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:43:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:43:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:43:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 07:43:55,854 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-14 07:43:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:55,854 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 07:43:55,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:43:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 07:43:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 07:43:55,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:55,855 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:55,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:43:55,856 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1138512449, now seen corresponding path program 24 times [2020-10-14 07:43:55,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:55,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638422538] [2020-10-14 07:43:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:55,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 07:44:00,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 07:44:00,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:44:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 07:44:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:44:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:00,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:00,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:00,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:44:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:44:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:44:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 07:44:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:01,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:44:01,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:44:01,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:01,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:01,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:01,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:44:01,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-14 07:44:01,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638422538] [2020-10-14 07:44:01,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:01,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:44:01,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738552248] [2020-10-14 07:44:01,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:44:01,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:01,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:44:01,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:44:01,130 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-14 07:44:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:01,207 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-14 07:44:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:44:01,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-14 07:44:01,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:01,209 INFO L225 Difference]: With dead ends: 109 [2020-10-14 07:44:01,209 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 07:44:01,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:44:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 07:44:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 07:44:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 07:44:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 07:44:01,220 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-14 07:44:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:01,220 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 07:44:01,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:44:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 07:44:01,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 07:44:01,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:01,223 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:01,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:44:01,223 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:01,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1912334397, now seen corresponding path program 25 times [2020-10-14 07:44:01,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:01,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060491305] [2020-10-14 07:44:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:44:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:44:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:44:06,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:44:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:44:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:44:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 07:44:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:44:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-14 07:44:06,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060491305] [2020-10-14 07:44:06,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:06,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:44:06,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038298525] [2020-10-14 07:44:06,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:44:06,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:44:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:06,562 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-14 07:44:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:06,826 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-14 07:44:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:44:06,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-14 07:44:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:06,828 INFO L225 Difference]: With dead ends: 129 [2020-10-14 07:44:06,828 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 07:44:06,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 07:44:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 07:44:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 07:44:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 07:44:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 07:44:06,833 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-14 07:44:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:06,833 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 07:44:06,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:44:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 07:44:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 07:44:06,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:06,835 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:06,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:44:06,835 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash 354999195, now seen corresponding path program 26 times [2020-10-14 07:44:06,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:06,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177574176] [2020-10-14 07:44:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:11,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:11,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 07:44:11,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:11,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 07:44:11,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:11,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:44:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:44:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:11,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:11,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:44:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:44:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:44:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 07:44:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:12,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2020-10-14 07:44:12,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177574176] [2020-10-14 07:44:12,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:12,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:44:12,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330388946] [2020-10-14 07:44:12,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:44:12,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:44:12,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:12,198 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-14 07:44:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:12,301 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-14 07:44:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:44:12,301 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-14 07:44:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:12,302 INFO L225 Difference]: With dead ends: 134 [2020-10-14 07:44:12,303 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 07:44:12,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 07:44:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 07:44:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:44:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 07:44:12,309 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-14 07:44:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:12,309 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 07:44:12,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:44:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 07:44:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 07:44:12,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:12,310 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:12,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:44:12,311 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:12,311 INFO L82 PathProgramCache]: Analyzing trace with hash -597696771, now seen corresponding path program 27 times [2020-10-14 07:44:12,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:12,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096990329] [2020-10-14 07:44:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:17,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:17,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:17,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:17,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:44:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:17,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 07:44:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 07:44:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:44:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-14 07:44:17,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096990329] [2020-10-14 07:44:17,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:17,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:44:17,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542100404] [2020-10-14 07:44:17,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:44:17,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:17,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:44:17,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:17,607 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-14 07:44:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:17,714 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-14 07:44:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:44:17,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-14 07:44:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:17,715 INFO L225 Difference]: With dead ends: 117 [2020-10-14 07:44:17,715 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 07:44:17,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 07:44:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 07:44:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 07:44:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 07:44:17,727 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-14 07:44:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:17,727 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 07:44:17,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:44:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 07:44:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 07:44:17,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:17,729 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:17,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 07:44:17,729 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:17,729 INFO L82 PathProgramCache]: Analyzing trace with hash 160188923, now seen corresponding path program 28 times [2020-10-14 07:44:17,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:17,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095978155] [2020-10-14 07:44:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:22,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:22,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 07:44:22,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 07:44:22,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:22,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 07:44:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:44:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:22,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:22,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 07:44:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:22,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:22,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:22,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:22,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:44:22,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:22,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:44:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 07:44:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:23,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:23,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:44:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:44:23,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:23,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:44:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-14 07:44:23,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095978155] [2020-10-14 07:44:23,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:23,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:23,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811635634] [2020-10-14 07:44:23,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:23,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:23,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:23,103 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-14 07:44:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:23,373 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-14 07:44:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:44:23,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-14 07:44:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:23,375 INFO L225 Difference]: With dead ends: 139 [2020-10-14 07:44:23,375 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 07:44:23,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 07:44:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 07:44:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 07:44:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 07:44:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 07:44:23,381 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-14 07:44:23,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:23,382 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 07:44:23,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 07:44:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 07:44:23,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:23,386 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:23,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 07:44:23,387 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash -890202663, now seen corresponding path program 29 times [2020-10-14 07:44:23,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:23,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536812666] [2020-10-14 07:44:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:28,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 07:44:28,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 07:44:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:28,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 07:44:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:44:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:28,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:28,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:28,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:28,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:28,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:44:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 07:44:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:44:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 07:44:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:28,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-14 07:44:28,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536812666] [2020-10-14 07:44:28,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:28,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:44:28,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247834073] [2020-10-14 07:44:28,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:44:28,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:28,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:44:28,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:28,784 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-14 07:44:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:29,106 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-14 07:44:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:29,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-14 07:44:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:29,107 INFO L225 Difference]: With dead ends: 143 [2020-10-14 07:44:29,108 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 07:44:29,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 07:44:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 07:44:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 07:44:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 07:44:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 07:44:29,115 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-14 07:44:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:29,116 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 07:44:29,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:44:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 07:44:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 07:44:29,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:29,117 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:29,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 07:44:29,117 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash -993475785, now seen corresponding path program 30 times [2020-10-14 07:44:29,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:29,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536277377] [2020-10-14 07:44:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 07:44:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 07:44:34,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:34,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:44:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:34,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:34,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:34,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:44:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:34,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:34,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 07:44:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:34,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:34,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 07:44:34,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:34,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 07:44:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:34,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:44:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:34,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-14 07:44:34,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536277377] [2020-10-14 07:44:34,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:34,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:34,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964022815] [2020-10-14 07:44:34,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:34,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:34,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:34,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:34,527 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-14 07:44:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:34,654 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-14 07:44:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:44:34,655 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-14 07:44:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:34,656 INFO L225 Difference]: With dead ends: 148 [2020-10-14 07:44:34,656 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 07:44:34,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 07:44:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 07:44:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 07:44:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 07:44:34,662 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-14 07:44:34,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:34,662 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 07:44:34,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 07:44:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 07:44:34,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:34,663 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:34,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 07:44:34,664 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:34,664 INFO L82 PathProgramCache]: Analyzing trace with hash 480297625, now seen corresponding path program 31 times [2020-10-14 07:44:34,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:34,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614138839] [2020-10-14 07:44:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 07:44:39,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:39,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 07:44:39,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:44:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:44:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 07:44:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 07:44:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-14 07:44:40,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614138839] [2020-10-14 07:44:40,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:40,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:44:40,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561802593] [2020-10-14 07:44:40,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:44:40,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:40,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:44:40,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:40,090 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-14 07:44:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:40,231 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-14 07:44:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:40,231 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-14 07:44:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:40,232 INFO L225 Difference]: With dead ends: 150 [2020-10-14 07:44:40,232 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 07:44:40,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 07:44:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 07:44:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 07:44:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 07:44:40,238 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-14 07:44:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:40,239 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 07:44:40,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:44:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 07:44:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 07:44:40,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:40,240 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:40,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 07:44:40,240 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:40,241 INFO L82 PathProgramCache]: Analyzing trace with hash -562663045, now seen corresponding path program 32 times [2020-10-14 07:44:40,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:40,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055949004] [2020-10-14 07:44:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 07:44:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:44:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:44:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:45,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 07:44:45,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:45,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:44:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 07:44:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:45,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-14 07:44:45,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055949004] [2020-10-14 07:44:45,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:45,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:44:45,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536468356] [2020-10-14 07:44:45,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:44:45,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:45,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:44:45,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:44:45,623 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-14 07:44:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:45,730 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-14 07:44:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:44:45,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-14 07:44:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:45,731 INFO L225 Difference]: With dead ends: 131 [2020-10-14 07:44:45,731 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 07:44:45,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:44:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 07:44:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 07:44:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 07:44:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 07:44:45,736 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-14 07:44:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:45,737 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 07:44:45,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:44:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 07:44:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 07:44:45,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:45,738 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:45,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 07:44:45,738 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:45,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1236878585, now seen corresponding path program 33 times [2020-10-14 07:44:45,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:45,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328199185] [2020-10-14 07:44:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 07:44:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:44:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:50,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:44:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 07:44:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:50,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:44:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:44:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 07:44:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-14 07:44:51,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328199185] [2020-10-14 07:44:51,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:51,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:44:51,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840717575] [2020-10-14 07:44:51,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:44:51,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:51,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:44:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:51,152 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-14 07:44:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:51,491 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-14 07:44:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:51,492 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-14 07:44:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:51,493 INFO L225 Difference]: With dead ends: 155 [2020-10-14 07:44:51,493 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 07:44:51,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:44:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 07:44:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 07:44:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 07:44:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-14 07:44:51,505 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-14 07:44:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:51,505 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-14 07:44:51,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:44:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-14 07:44:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 07:44:51,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:51,507 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:51,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 07:44:51,508 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1507653975, now seen corresponding path program 34 times [2020-10-14 07:44:51,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:51,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221470105] [2020-10-14 07:44:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:44:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:56,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:56,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:44:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:44:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:56,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 07:44:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:56,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:44:56,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 07:44:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:56,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:44:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-14 07:44:56,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221470105] [2020-10-14 07:44:56,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:56,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:44:56,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251034421] [2020-10-14 07:44:56,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:44:56,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:56,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:44:56,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:56,989 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-14 07:44:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:57,124 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-14 07:44:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:57,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-14 07:44:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:57,126 INFO L225 Difference]: With dead ends: 160 [2020-10-14 07:44:57,126 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 07:44:57,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 07:44:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 07:44:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 07:44:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 07:44:57,132 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-14 07:44:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:57,132 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 07:44:57,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:44:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 07:44:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 07:44:57,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:57,134 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:57,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 07:44:57,134 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:57,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2027353529, now seen corresponding path program 35 times [2020-10-14 07:44:57,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:57,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355481901] [2020-10-14 07:44:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:45:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-14 07:45:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:45:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:02,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:02,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:02,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:45:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 07:45:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:02,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:45:02,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 07:45:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:02,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:45:02,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 07:45:02,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:02,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:45:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-14 07:45:02,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355481901] [2020-10-14 07:45:02,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:02,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:45:02,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227743412] [2020-10-14 07:45:02,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:45:02,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:45:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:02,569 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-14 07:45:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:02,644 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-14 07:45:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:45:02,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-14 07:45:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:02,646 INFO L225 Difference]: With dead ends: 139 [2020-10-14 07:45:02,646 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 07:45:02,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 07:45:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 07:45:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 07:45:02,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 07:45:02,651 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-14 07:45:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:02,651 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 07:45:02,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:45:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 07:45:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 07:45:02,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:02,653 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:02,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 07:45:02,653 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash -757122633, now seen corresponding path program 36 times [2020-10-14 07:45:02,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:02,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91258064] [2020-10-14 07:45:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:07,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:45:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:45:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:07,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:07,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:07,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:07,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:07,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:07,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:07,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:45:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:45:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:45:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:07,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:45:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:45:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:07,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 07:45:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:45:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 07:45:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:45:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-14 07:45:08,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91258064] [2020-10-14 07:45:08,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:08,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:45:08,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383166714] [2020-10-14 07:45:08,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:45:08,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:08,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:45:08,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:08,151 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-14 07:45:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:08,523 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-14 07:45:08,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:45:08,523 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-14 07:45:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:08,524 INFO L225 Difference]: With dead ends: 165 [2020-10-14 07:45:08,524 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 07:45:08,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 07:45:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 07:45:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 07:45:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 07:45:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 07:45:08,531 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-14 07:45:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:08,531 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 07:45:08,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:45:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 07:45:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 07:45:08,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:08,533 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:08,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 07:45:08,533 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash 653985429, now seen corresponding path program 37 times [2020-10-14 07:45:08,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:08,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26389120] [2020-10-14 07:45:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:45:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:13,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:13,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:45:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:45:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 07:45:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:13,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:13,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:45:13,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:13,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:45:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 07:45:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2020-10-14 07:45:14,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26389120] [2020-10-14 07:45:14,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:14,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:45:14,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708145701] [2020-10-14 07:45:14,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:45:14,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:45:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:14,072 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-14 07:45:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:14,214 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-14 07:45:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:45:14,215 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-14 07:45:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:14,216 INFO L225 Difference]: With dead ends: 170 [2020-10-14 07:45:14,216 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 07:45:14,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 07:45:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 07:45:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 07:45:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-14 07:45:14,222 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-14 07:45:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:14,222 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-14 07:45:14,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:45:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-14 07:45:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 07:45:14,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:14,223 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:14,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 07:45:14,223 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:14,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1036619657, now seen corresponding path program 38 times [2020-10-14 07:45:14,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:14,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052995589] [2020-10-14 07:45:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:45:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:19,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:19,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:45:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:45:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:45:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:19,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 07:45:19,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:45:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-14 07:45:19,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052995589] [2020-10-14 07:45:19,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:19,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:45:19,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563782152] [2020-10-14 07:45:19,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:45:19,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:45:19,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:45:19,705 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-14 07:45:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:19,833 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-14 07:45:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:45:19,833 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-14 07:45:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:19,835 INFO L225 Difference]: With dead ends: 147 [2020-10-14 07:45:19,835 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 07:45:19,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:45:19,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 07:45:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 07:45:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 07:45:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-14 07:45:19,840 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-14 07:45:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:19,840 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-14 07:45:19,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:45:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-14 07:45:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 07:45:19,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:19,841 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:19,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 07:45:19,842 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1742636277, now seen corresponding path program 39 times [2020-10-14 07:45:19,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:19,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773765260] [2020-10-14 07:45:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:24,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:45:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:24,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:24,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:24,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:24,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:24,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:24,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:24,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:45:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:45:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:25,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:45:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:45:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:45:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 07:45:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:25,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2020-10-14 07:45:25,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773765260] [2020-10-14 07:45:25,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:25,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:45:25,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317637065] [2020-10-14 07:45:25,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:45:25,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:25,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:45:25,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:45:25,420 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-14 07:45:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:25,803 INFO L93 Difference]: Finished difference Result 175 states and 185 transitions. [2020-10-14 07:45:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:45:25,803 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-14 07:45:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:25,804 INFO L225 Difference]: With dead ends: 175 [2020-10-14 07:45:25,804 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 07:45:25,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 07:45:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 07:45:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-14 07:45:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 07:45:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-14 07:45:25,813 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-14 07:45:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:25,815 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-14 07:45:25,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 07:45:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-14 07:45:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 07:45:25,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:25,817 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:25,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 07:45:25,817 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1849903699, now seen corresponding path program 40 times [2020-10-14 07:45:25,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:25,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429638782] [2020-10-14 07:45:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:30,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:30,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 07:45:30,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 07:45:30,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:30,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:45:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:45:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:45:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:30,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:30,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:45:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:30,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:30,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:45:30,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 07:45:30,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:30,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:45:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:45:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:45:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 07:45:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:31,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:45:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:31,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 07:45:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:31,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:31,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:45:31,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:31,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 07:45:31,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:31,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:45:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2020-10-14 07:45:31,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429638782] [2020-10-14 07:45:31,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:31,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 07:45:31,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035690636] [2020-10-14 07:45:31,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 07:45:31,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:31,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 07:45:31,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:45:31,428 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-14 07:45:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:31,864 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-10-14 07:45:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:45:31,865 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 180 [2020-10-14 07:45:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:31,866 INFO L225 Difference]: With dead ends: 179 [2020-10-14 07:45:31,866 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 07:45:31,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 07:45:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 07:45:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 07:45:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 07:45:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-14 07:45:31,873 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-14 07:45:31,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:31,873 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-14 07:45:31,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 07:45:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-14 07:45:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 07:45:31,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:31,875 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:31,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 07:45:31,876 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:31,876 INFO L82 PathProgramCache]: Analyzing trace with hash 552915249, now seen corresponding path program 41 times [2020-10-14 07:45:31,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:31,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003085702] [2020-10-14 07:45:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:36,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:45:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:45:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:37,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:37,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:37,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:37,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:45:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:37,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:45:37,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 07:45:37,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:37,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:45:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 07:45:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:45:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 07:45:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:37,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:45:37,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 07:45:37,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:37,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:45:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2020-10-14 07:45:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003085702] [2020-10-14 07:45:37,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:37,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:45:37,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809392693] [2020-10-14 07:45:37,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:45:37,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:37,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:45:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:45:37,548 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states. [2020-10-14 07:45:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:37,707 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2020-10-14 07:45:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:45:37,708 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 186 [2020-10-14 07:45:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:37,709 INFO L225 Difference]: With dead ends: 184 [2020-10-14 07:45:37,709 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 07:45:37,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:45:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 07:45:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 07:45:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 07:45:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-14 07:45:37,715 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 186 [2020-10-14 07:45:37,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:37,716 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-14 07:45:37,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 07:45:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-14 07:45:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 07:45:37,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:37,717 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 16, 16, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:37,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 07:45:37,717 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:37,718 INFO L82 PathProgramCache]: Analyzing trace with hash -936102125, now seen corresponding path program 42 times [2020-10-14 07:45:37,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:37,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866090963] [2020-10-14 07:45:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:42,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:42,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:45:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:42,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:45:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:43,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:45:43,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 07:45:43,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:43,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:45:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 07:45:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:45:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 07:45:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:43,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:45:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 07:45:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:45:43,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3095 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2020-10-14 07:45:43,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866090963] [2020-10-14 07:45:43,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:43,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 07:45:43,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608627682] [2020-10-14 07:45:43,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 07:45:43,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:43,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 07:45:43,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:45:43,382 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 20 states. [2020-10-14 07:45:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:43,538 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2020-10-14 07:45:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:45:43,539 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 188 [2020-10-14 07:45:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:43,540 INFO L225 Difference]: With dead ends: 186 [2020-10-14 07:45:43,540 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 07:45:43,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:45:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 07:45:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 07:45:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 07:45:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-14 07:45:43,546 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 188 [2020-10-14 07:45:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:43,546 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-14 07:45:43,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 07:45:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-14 07:45:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 07:45:43,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:43,548 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:43,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 07:45:43,548 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1657688971, now seen corresponding path program 43 times [2020-10-14 07:45:43,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:43,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821189303] [2020-10-14 07:45:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking...