/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:18:57,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:18:57,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:18:57,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:18:57,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:18:57,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:18:57,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:18:57,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:18:57,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:18:57,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:18:57,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:18:57,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:18:57,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:18:57,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:18:57,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:18:57,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:18:57,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:18:57,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:18:57,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:18:57,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:18:57,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:18:57,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:18:57,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:18:57,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:18:57,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:18:57,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:18:57,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:18:57,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:18:57,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:18:57,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:18:57,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:18:57,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:18:57,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:18:57,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:18:57,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:18:57,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:18:57,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:18:57,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:18:57,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:18:57,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:18:57,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:18:57,294 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 [2020-09-25 04:18:57,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:18:57,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:18:57,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:18:57,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:18:57,345 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:18:57,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:18:57,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:18:57,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:18:57,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:18:57,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:18:57,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:18:57,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:18:57,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:18:57,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:18:57,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:18:57,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:18:57,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:18:57,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:18:57,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:18:57,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:18:57,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:18:57,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:57,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:18:57,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:18:57,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:18:57,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:18:57,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:18:57,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:18:57,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:18:57,353 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:18:57,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:18:57,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:18:57,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:18:57,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:18:57,843 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:18:57,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 04:18:57,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/790e526be/38bc9dd0d82c4b8fa5e80579a3694fd2/FLAGdfa6574ae [2020-09-25 04:18:58,457 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:18:58,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 04:18:58,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/790e526be/38bc9dd0d82c4b8fa5e80579a3694fd2/FLAGdfa6574ae [2020-09-25 04:18:58,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/790e526be/38bc9dd0d82c4b8fa5e80579a3694fd2 [2020-09-25 04:18:58,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:18:58,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:18:58,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:58,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:18:58,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:18:58,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:58" (1/1) ... [2020-09-25 04:18:58,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58419e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:58, skipping insertion in model container [2020-09-25 04:18:58,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:58" (1/1) ... [2020-09-25 04:18:58,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:18:58,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:18:59,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:59,126 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:18:59,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:59,165 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:18:59,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59 WrapperNode [2020-09-25 04:18:59,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:59,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:18:59,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:18:59,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:18:59,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (1/1) ... [2020-09-25 04:18:59,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:18:59,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:18:59,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:18:59,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:18:59,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (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 [2020-09-25 04:18:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:18:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:18:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:18:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:18:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:18:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:18:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:18:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:18:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:18:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:18:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:18:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:18:59,627 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:18:59,627 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:18:59,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:59 BoogieIcfgContainer [2020-09-25 04:18:59,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:18:59,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:18:59,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:18:59,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:18:59,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:18:58" (1/3) ... [2020-09-25 04:18:59,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dbae38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:59, skipping insertion in model container [2020-09-25 04:18:59,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:59" (2/3) ... [2020-09-25 04:18:59,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dbae38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:59, skipping insertion in model container [2020-09-25 04:18:59,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:59" (3/3) ... [2020-09-25 04:18:59,642 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-25 04:18:59,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:18:59,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:18:59,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:18:59,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:18:59,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:18:59,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:18:59,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:18:59,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:18:59,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:18:59,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:18:59,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:18:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:18:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:18:59,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:59,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:59,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:18:59,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:59,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644530397] [2020-09-25 04:18:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:19:00,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 04:19:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:19:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:19:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:00,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:00,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:00,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:00,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:19:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:19:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:19:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:19:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:19:00,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644530397] [2020-09-25 04:19:00,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:00,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:00,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058541527] [2020-09-25 04:19:00,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:00,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:00,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:00,347 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:19:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:00,431 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:19:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:00,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:19:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:00,448 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:19:00,448 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:19:00,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:19:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:19:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:19:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:19:00,508 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:19:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:00,508 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:19:00,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:19:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:19:00,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:00,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:00,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:19:00,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:00,513 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:19:00,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:00,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006890489] [2020-09-25 04:19:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:19:00,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:19:00,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:00,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:00,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:00,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:19:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:19:00,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006890489] [2020-09-25 04:19:00,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:00,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:00,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013819782] [2020-09-25 04:19:00,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:00,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:00,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:00,775 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:19:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:00,845 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:19:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:00,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:19:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:00,848 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:19:00,848 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:19:00,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:19:00,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:19:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:19:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:19:00,860 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:19:00,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:00,861 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:19:00,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:19:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:19:00,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:00,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:00,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:19:00,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:00,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:19:00,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:00,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391679848] [2020-09-25 04:19:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:02,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:19:02,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-09-25 04:19:02,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:02,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:02,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:19:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:02,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:02,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 04:19:02,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:02,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:02,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:02,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:02,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:02,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:19:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:02,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:19:03,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391679848] [2020-09-25 04:19:03,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:03,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:19:03,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708595129] [2020-09-25 04:19:03,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:03,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:03,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:03,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:03,050 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:19:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:03,255 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:19:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:03,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:19:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:03,261 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:19:03,262 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:19:03,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:19:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:19:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:19:03,289 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:19:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:03,291 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:19:03,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:19:03,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:19:03,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:03,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:03,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:19:03,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:19:03,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:03,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431483907] [2020-09-25 04:19:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:19:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-09-25 04:19:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:19:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:04,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:04,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:04,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:05,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:05,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:19:05,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:19:05,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:19:05,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431483907] [2020-09-25 04:19:05,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:05,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:05,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788447903] [2020-09-25 04:19:05,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:05,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:05,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:05,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:05,525 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:19:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:05,644 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 04:19:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:05,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:19:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:05,648 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:19:05,648 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:19:05,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:19:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:19:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 04:19:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:19:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 04:19:05,660 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 04:19:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:05,661 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 04:19:05,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 04:19:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:05,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:05,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:05,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:05,664 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:05,665 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:19:05,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:05,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908990108] [2020-09-25 04:19:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:19:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:19:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:10,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:10,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:10,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:10,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3168 [2020-09-25 04:19:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:13,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:13,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:13,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:13,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:19:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:13,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:13,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:13,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:13,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:13,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:13,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:13,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:14,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:14,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:19:14,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 04:19:14,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908990108] [2020-09-25 04:19:14,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:14,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:14,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025608836] [2020-09-25 04:19:14,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:14,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:14,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:14,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:14,061 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 04:19:14,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:14,205 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 04:19:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:14,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:14,214 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:19:14,214 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:19:14,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:19:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 04:19:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:19:14,237 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 04:19:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:14,237 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:19:14,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:19:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:19:14,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:14,247 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:14,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:14,248 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:19:14,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:14,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561845942] [2020-09-25 04:19:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:19:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:19:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:19,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:19:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:19,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:19:24,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:19:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:19:24,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:19:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:24,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:19:24,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:24,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:24,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:19:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 04:19:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:24,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:24,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:24,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:19:24,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561845942] [2020-09-25 04:19:24,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:24,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:24,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052079089] [2020-09-25 04:19:24,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:24,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:24,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:24,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:24,469 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 6 states. [2020-09-25 04:19:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:24,565 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2020-09-25 04:19:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:24,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:19:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:24,570 INFO L225 Difference]: With dead ends: 98 [2020-09-25 04:19:24,570 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 04:19:24,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 04:19:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 04:19:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:19:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-25 04:19:24,595 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 67 [2020-09-25 04:19:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:24,596 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-25 04:19:24,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-25 04:19:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:19:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:24,607 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:24,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:19:24,608 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:24,608 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:19:24,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:24,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577537587] [2020-09-25 04:19:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:19:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:29,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:19:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:29,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:29,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:29,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:19:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:34,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:19:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:34,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:34,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:34,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:19:34,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:34,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:34,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:34,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:34,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:34,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:34,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:34,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:19:34,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:34,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:19:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:35,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:35,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:35,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 04:19:35,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577537587] [2020-09-25 04:19:35,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:35,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:19:35,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616461582] [2020-09-25 04:19:35,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:19:35,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:35,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:19:35,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:35,035 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 9 states. [2020-09-25 04:19:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:35,255 INFO L93 Difference]: Finished difference Result 130 states and 183 transitions. [2020-09-25 04:19:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:19:35,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 04:19:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:35,258 INFO L225 Difference]: With dead ends: 130 [2020-09-25 04:19:35,258 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 04:19:35,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:19:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 04:19:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-25 04:19:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 04:19:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2020-09-25 04:19:35,272 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 69 [2020-09-25 04:19:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:35,273 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2020-09-25 04:19:35,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:19:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2020-09-25 04:19:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 04:19:35,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:35,275 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:35,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:19:35,276 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 04:19:35,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:35,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457603814] [2020-09-25 04:19:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:40,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 04:19:40,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:19:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:40,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:19:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:40,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:40,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:40,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:40,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:40,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:40,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:40,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:40,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:45,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:19:45,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 04:19:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:45,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:45,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:19:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:45,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-09-25 04:19:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:45,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:19:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:19:45,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:45,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:45,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:45,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:45,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:45,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:45,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:45,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:45,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:45,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:45,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:45,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:45,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 04:19:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:46,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:46,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-09-25 04:19:46,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:46,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:19:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:46,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:46,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:46,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:46,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:46,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:46,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:46,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:46,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 04:19:46,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457603814] [2020-09-25 04:19:46,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:46,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:46,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4560927] [2020-09-25 04:19:46,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:46,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:46,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:46,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:46,716 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand 6 states. [2020-09-25 04:19:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:46,781 INFO L93 Difference]: Finished difference Result 148 states and 211 transitions. [2020-09-25 04:19:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:46,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-25 04:19:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:46,783 INFO L225 Difference]: With dead ends: 148 [2020-09-25 04:19:46,784 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 04:19:46,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:46,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 04:19:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 04:19:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 04:19:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2020-09-25 04:19:46,797 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 101 [2020-09-25 04:19:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:46,799 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2020-09-25 04:19:46,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2020-09-25 04:19:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 04:19:46,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:46,801 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:46,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:19:46,801 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1645450882, now seen corresponding path program 1 times [2020-09-25 04:19:46,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:46,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880068123] [2020-09-25 04:19:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:19:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:19:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:19:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:51,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:19:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:51,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:51,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:51,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:51,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:51,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking...