/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:22:25,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:22:25,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:22:25,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:22:25,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:22:25,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:22:25,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:22:25,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:22:25,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:22:25,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:22:25,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:22:25,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:22:25,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:22:25,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:22:25,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:22:25,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:22:25,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:22:25,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:22:25,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:22:25,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:22:25,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:22:25,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:22:25,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:22:25,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:22:25,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:22:25,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:22:25,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:22:25,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:22:25,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:22:25,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:22:25,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:22:25,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:22:25,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:22:25,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:22:25,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:22:25,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:22:25,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:22:25,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:22:25,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:22:25,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:22:25,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:22:25,268 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 13:22:25,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:22:25,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:22:25,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:22:25,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:22:25,331 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:22:25,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:22:25,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:22:25,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:22:25,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:22:25,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:22:25,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:22:25,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:22:25,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:22:25,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:22:25,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:22:25,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:22:25,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:22:25,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:22:25,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:22:25,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:22:25,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:22:25,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:25,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:22:25,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:22:25,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:22:25,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:22:25,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:22:25,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:22:25,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:22:25,340 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:22:25,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:22:25,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:22:25,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:22:25,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:22:25,880 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:22:25,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-25 13:22:25,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddb0f42d5/e980c870e45e48b0897f1db3854eb880/FLAG6b4fe1a2b [2020-09-25 13:22:26,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:22:26,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-25 13:22:26,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddb0f42d5/e980c870e45e48b0897f1db3854eb880/FLAG6b4fe1a2b [2020-09-25 13:22:26,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddb0f42d5/e980c870e45e48b0897f1db3854eb880 [2020-09-25 13:22:26,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:22:26,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:22:26,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:26,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:22:26,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:22:26,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3741a3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26, skipping insertion in model container [2020-09-25 13:22:26,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:22:26,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:22:27,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:27,198 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:22:27,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:27,239 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:22:27,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27 WrapperNode [2020-09-25 13:22:27,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:27,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:22:27,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:22:27,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:22:27,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (1/1) ... [2020-09-25 13:22:27,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:22:27,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:22:27,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:22:27,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:22:27,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (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 13:22:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:22:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:22:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:22:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:22:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:22:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:22:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:22:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:22:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:22:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:22:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:22:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:22:27,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:22:27,690 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:22:27,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:27 BoogieIcfgContainer [2020-09-25 13:22:27,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:22:27,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:22:27,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:22:27,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:22:27,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:22:26" (1/3) ... [2020-09-25 13:22:27,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de29baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:27, skipping insertion in model container [2020-09-25 13:22:27,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:27" (2/3) ... [2020-09-25 13:22:27,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de29baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:27, skipping insertion in model container [2020-09-25 13:22:27,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:27" (3/3) ... [2020-09-25 13:22:27,713 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-2.c [2020-09-25 13:22:27,741 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:22:27,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:22:27,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:22:27,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:22:27,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:22:27,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:22:27,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:22:27,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:22:27,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:22:27,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:22:27,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:22:27,874 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:22:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:22:27,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:27,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:27,883 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:27,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:22:27,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:27,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279288813] [2020-09-25 13:22:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:22:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:22:28,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:22:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:22:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:22:28,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,263 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 13:22:28,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279288813] [2020-09-25 13:22:28,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:28,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:28,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69684433] [2020-09-25 13:22:28,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:28,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:28,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:28,293 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:22:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:28,428 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:22:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:28,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:22:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:28,446 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:22:28,446 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:22:28,451 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 13:22:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:22:28,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:22:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:22:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:22:28,524 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:22:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:28,525 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:22:28,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:22:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:22:28,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:28,529 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 13:22:28,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:22:28,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:22:28,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:28,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118311548] [2020-09-25 13:22:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:22:28,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:22:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:28,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:22:28,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,737 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 13:22:28,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118311548] [2020-09-25 13:22:28,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:28,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:28,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383832654] [2020-09-25 13:22:28,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:28,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:28,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:28,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:28,742 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:22:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:28,826 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:22:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:28,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:22:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:28,829 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:22:28,829 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:22:28,831 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 13:22:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:22:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:22:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:22:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:22:28,842 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:22:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:28,842 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:22:28,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:22:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:22:28,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:28,845 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 13:22:28,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:22:28,846 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:22:28,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:28,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447065784] [2020-09-25 13:22:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:29,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:22:29,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-09-25 13:22:29,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:29,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:22:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:29,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:29,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:29,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:29,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:29,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:29,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 13:22:29,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:29,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:29,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:22:29,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:29,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:29,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:29,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:29,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:29,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:29,939 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 13:22:29,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447065784] [2020-09-25 13:22:29,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:29,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:22:29,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686174216] [2020-09-25 13:22:29,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:29,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:29,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:29,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:29,952 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:22:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:30,147 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:22:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:30,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:22:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:30,152 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:22:30,156 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:22:30,157 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 13:22:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:22:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:22:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:22:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:22:30,180 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:22:30,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:30,181 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:22:30,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:22:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:22:30,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:30,184 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 13:22:30,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:22:30,184 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:30,185 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:22:30,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:30,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799630602] [2020-09-25 13:22:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:22:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-25 13:22:30,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:30,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:22:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:30,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:30,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:30,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:30,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-25 13:22:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:31,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:22:31,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:31,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:31,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,274 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 13:22:31,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799630602] [2020-09-25 13:22:31,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:31,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:31,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931625371] [2020-09-25 13:22:31,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:31,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:31,277 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:22:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:31,408 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 13:22:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:31,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:22:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:31,411 INFO L225 Difference]: With dead ends: 110 [2020-09-25 13:22:31,411 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:22:31,413 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 13:22:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:22:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:22:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:22:31,425 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 13:22:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:31,426 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:22:31,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:22:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:22:31,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:31,429 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 13:22:31,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:22:31,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:22:31,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:31,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687455149] [2020-09-25 13:22:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:36,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:22:36,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:36,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:36,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:22:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:40,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3798 [2020-09-25 13:22:40,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:40,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:40,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:40,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:40,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:40,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 13:22:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:40,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:40,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:40,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:40,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:40,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:40,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:40,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:40,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:40,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:22:40,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:40,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:40,450 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 13:22:40,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687455149] [2020-09-25 13:22:40,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:40,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:40,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942695836] [2020-09-25 13:22:40,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:40,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:40,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:40,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:40,452 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 13:22:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:40,616 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2020-09-25 13:22:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:22:40,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:22:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:40,619 INFO L225 Difference]: With dead ends: 78 [2020-09-25 13:22:40,619 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 13:22:40,620 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 13:22:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 13:22:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-25 13:22:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 13:22:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2020-09-25 13:22:40,637 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 51 [2020-09-25 13:22:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:40,637 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2020-09-25 13:22:40,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2020-09-25 13:22:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:22:40,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:40,645 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 13:22:40,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:22:40,645 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:22:40,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:40,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717303434] [2020-09-25 13:22:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:45,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:22:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:22:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:22:45,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:45,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:22:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:45,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:45,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:45,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:22:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:22:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:50,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:22:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:50,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:50,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:22:50,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:50,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:50,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:50,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:50,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:50,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:50,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:50,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:50,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:50,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 13:22:50,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:50,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:22:51,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:51,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:51,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:51,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:22:51,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717303434] [2020-09-25 13:22:51,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:51,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:51,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462305982] [2020-09-25 13:22:51,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:51,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:51,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:51,035 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand 10 states. [2020-09-25 13:22:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:51,340 INFO L93 Difference]: Finished difference Result 151 states and 213 transitions. [2020-09-25 13:22:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:22:51,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 13:22:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:51,343 INFO L225 Difference]: With dead ends: 151 [2020-09-25 13:22:51,343 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 13:22:51,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:22:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 13:22:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2020-09-25 13:22:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 13:22:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-09-25 13:22:51,357 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 67 [2020-09-25 13:22:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:51,358 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-09-25 13:22:51,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-09-25 13:22:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:22:51,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:51,360 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 13:22:51,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:51,360 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:51,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:51,360 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 13:22:51,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:51,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001779729] [2020-09-25 13:22:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:22:56,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:22:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:22:56,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:56,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:56,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:56,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:56,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:56,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:23:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:23:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:01,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:23:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:01,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:01,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:01,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:01,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:01,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 13:23:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:01,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:23:01,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:01,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:01,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:01,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:01,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:01,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:01,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 13:23:01,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001779729] [2020-09-25 13:23:01,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:01,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:01,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067116918] [2020-09-25 13:23:01,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:01,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:01,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:01,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:01,747 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 9 states. [2020-09-25 13:23:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:01,931 INFO L93 Difference]: Finished difference Result 128 states and 174 transitions. [2020-09-25 13:23:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:23:01,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 13:23:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:01,935 INFO L225 Difference]: With dead ends: 128 [2020-09-25 13:23:01,936 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 13:23:01,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 13:23:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 13:23:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2020-09-25 13:23:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 13:23:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 161 transitions. [2020-09-25 13:23:01,955 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 161 transitions. Word has length 69 [2020-09-25 13:23:01,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:01,955 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 161 transitions. [2020-09-25 13:23:01,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 161 transitions. [2020-09-25 13:23:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 13:23:01,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:01,958 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 13:23:01,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:01,958 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:01,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 13:23:01,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:01,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852347071] [2020-09-25 13:23:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:06,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 13:23:06,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:06,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:06,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:06,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:23:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 13:23:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:23:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:23:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:23:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:23:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-09-25 13:23:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:12,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:13,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:23:13,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:13,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:13,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:13,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:13,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:13,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:23:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:23:13,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 13:23:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:14,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:14,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:14,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:14,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:14,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:14,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 13:23:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852347071] [2020-09-25 13:23:14,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:14,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:23:14,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065046454] [2020-09-25 13:23:14,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:23:14,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:14,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:23:14,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:23:14,100 INFO L87 Difference]: Start difference. First operand 116 states and 161 transitions. Second operand 11 states. [2020-09-25 13:23:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:14,568 INFO L93 Difference]: Finished difference Result 273 states and 453 transitions. [2020-09-25 13:23:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:23:14,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-09-25 13:23:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:14,571 INFO L225 Difference]: With dead ends: 273 [2020-09-25 13:23:14,571 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 13:23:14,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:23:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 13:23:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2020-09-25 13:23:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 13:23:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 149 transitions. [2020-09-25 13:23:14,587 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 149 transitions. Word has length 101 [2020-09-25 13:23:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:14,587 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 149 transitions. [2020-09-25 13:23:14,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:23:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 149 transitions. [2020-09-25 13:23:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 13:23:14,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:14,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:23:14,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:23:14,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:14,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 13:23:14,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:14,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669499590] [2020-09-25 13:23:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:23:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:23:19,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:23:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:23:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:23:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:19,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking...