/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:32,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:32,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:32,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:32,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:32,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:32,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:32,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:32,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:32,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:32,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:32,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:32,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:32,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:32,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:32,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:33,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:33,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:33,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:33,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:33,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:33,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:33,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:33,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:33,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:33,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:33,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:33,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:33,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:33,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:33,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:33,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:33,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:33,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:33,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:33,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:33,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:33,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:33,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:33,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:33,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:33,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:26:33,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:33,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:33,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:33,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:33,054 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:33,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:33,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:33,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:33,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:33,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:33,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:33,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:33,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:33,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:33,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:33,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:33,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:33,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:33,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:33,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:33,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:33,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:33,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:33,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:33,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:33,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:33,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:33,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:33,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:33,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:26:33,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:33,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:33,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:33,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:33,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:33,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 04:26:33,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd52ba5a2/c2713fb1277747c8a3209ab1f78e7be4/FLAGe18b0c821 [2020-09-25 04:26:34,384 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:34,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 04:26:34,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd52ba5a2/c2713fb1277747c8a3209ab1f78e7be4/FLAGe18b0c821 [2020-09-25 04:26:34,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd52ba5a2/c2713fb1277747c8a3209ab1f78e7be4 [2020-09-25 04:26:34,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:34,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:34,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:34,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:34,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:34,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:34" (1/1) ... [2020-09-25 04:26:34,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:34, skipping insertion in model container [2020-09-25 04:26:34,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:34" (1/1) ... [2020-09-25 04:26:34,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:34,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:35,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:35,126 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:35,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:35,344 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:35,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35 WrapperNode [2020-09-25 04:26:35,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:35,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:35,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:35,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:35,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... [2020-09-25 04:26:35,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:35,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:35,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:35,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:35,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:35,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:35,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:35,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:37,004 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:37,004 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:37,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:37 BoogieIcfgContainer [2020-09-25 04:26:37,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:37,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:37,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:37,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:37,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:34" (1/3) ... [2020-09-25 04:26:37,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:37, skipping insertion in model container [2020-09-25 04:26:37,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:35" (2/3) ... [2020-09-25 04:26:37,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:37, skipping insertion in model container [2020-09-25 04:26:37,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:37" (3/3) ... [2020-09-25 04:26:37,027 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-25 04:26:37,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:37,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:37,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:37,121 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:37,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:37,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:37,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:37,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:37,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:37,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:37,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:26:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 04:26:37,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:37,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:37,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-25 04:26:37,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:37,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843007766] [2020-09-25 04:26:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 04:26:42,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:26:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:26:42,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:42,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:26:42,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 04:26:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:26:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:26:42,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:26:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:42,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843007766] [2020-09-25 04:26:42,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:42,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:26:42,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664173474] [2020-09-25 04:26:42,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:26:42,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:42,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:26:42,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:26:42,935 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:26:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:45,322 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:26:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:45,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 04:26:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:45,363 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:26:45,363 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:26:45,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:26:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:26:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:26:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:26:45,485 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 155 [2020-09-25 04:26:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:45,486 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:26:45,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:26:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:26:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 04:26:45,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:45,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:45,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:45,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:45,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1141989810, now seen corresponding path program 1 times [2020-09-25 04:26:45,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:45,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054403987] [2020-09-25 04:26:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 04:26:50,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:26:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:26:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 04:26:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:26:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:26:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:26:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:26:50,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:26:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:50,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054403987] [2020-09-25 04:26:50,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:50,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:50,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467074425] [2020-09-25 04:26:50,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:50,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:50,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:50,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:50,854 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:26:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:52,301 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 04:26:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:52,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 04:26:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:52,311 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 04:26:52,311 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 04:26:52,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 04:26:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 04:26:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 04:26:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 04:26:52,360 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 173 [2020-09-25 04:26:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:52,361 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 04:26:52,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 04:26:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:26:52,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:52,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:52,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:52,370 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:52,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:52,370 INFO L82 PathProgramCache]: Analyzing trace with hash 608489, now seen corresponding path program 1 times [2020-09-25 04:26:52,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:52,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180937028] [2020-09-25 04:26:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 04:26:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:57,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:26:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:26:57,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:57,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:26:57,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:57,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180937028] [2020-09-25 04:26:57,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:57,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:57,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601459139] [2020-09-25 04:26:57,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:57,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:57,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:57,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:57,695 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 04:27:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:00,016 INFO L93 Difference]: Finished difference Result 2102 states and 2820 transitions. [2020-09-25 04:27:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:00,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 04:27:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:00,026 INFO L225 Difference]: With dead ends: 2102 [2020-09-25 04:27:00,026 INFO L226 Difference]: Without dead ends: 1308 [2020-09-25 04:27:00,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-09-25 04:27:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1272. [2020-09-25 04:27:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-09-25 04:27:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2020-09-25 04:27:00,086 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 181 [2020-09-25 04:27:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:00,087 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2020-09-25 04:27:00,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2020-09-25 04:27:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 04:27:00,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:00,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:00,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:00,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:00,098 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-25 04:27:00,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:00,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920321877] [2020-09-25 04:27:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 04:27:05,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:27:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 04:27:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:05,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 04:27:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 04:27:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:05,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:27:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:05,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:05,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:05,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:05,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:27:05,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:05,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:27:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:05,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920321877] [2020-09-25 04:27:05,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:05,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:05,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042011705] [2020-09-25 04:27:05,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:05,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:05,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:05,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:05,476 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand 5 states. [2020-09-25 04:27:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:07,367 INFO L93 Difference]: Finished difference Result 3032 states and 3899 transitions. [2020-09-25 04:27:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:07,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 04:27:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:07,382 INFO L225 Difference]: With dead ends: 3032 [2020-09-25 04:27:07,382 INFO L226 Difference]: Without dead ends: 1782 [2020-09-25 04:27:07,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-09-25 04:27:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1578. [2020-09-25 04:27:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-25 04:27:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1918 transitions. [2020-09-25 04:27:07,465 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1918 transitions. Word has length 193 [2020-09-25 04:27:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:07,466 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1918 transitions. [2020-09-25 04:27:07,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1918 transitions. [2020-09-25 04:27:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 04:27:07,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:07,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:07,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:07,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1504338062, now seen corresponding path program 1 times [2020-09-25 04:27:07,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:07,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137598850] [2020-09-25 04:27:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 04:27:12,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:27:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:27:12,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:27:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 04:27:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:27:12,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:27:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:27:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:27:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:27:12,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:27:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 04:27:12,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137598850] [2020-09-25 04:27:12,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:12,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:12,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833760664] [2020-09-25 04:27:12,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:12,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:12,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:12,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:12,795 INFO L87 Difference]: Start difference. First operand 1578 states and 1918 transitions. Second operand 5 states. [2020-09-25 04:27:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:14,813 INFO L93 Difference]: Finished difference Result 4059 states and 5108 transitions. [2020-09-25 04:27:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:14,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-09-25 04:27:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:14,830 INFO L225 Difference]: With dead ends: 4059 [2020-09-25 04:27:14,830 INFO L226 Difference]: Without dead ends: 2503 [2020-09-25 04:27:14,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2020-09-25 04:27:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2341. [2020-09-25 04:27:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2020-09-25 04:27:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 2815 transitions. [2020-09-25 04:27:14,920 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 2815 transitions. Word has length 212 [2020-09-25 04:27:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:14,920 INFO L479 AbstractCegarLoop]: Abstraction has 2341 states and 2815 transitions. [2020-09-25 04:27:14,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 2815 transitions. [2020-09-25 04:27:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 04:27:14,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:14,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:14,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:27:14,933 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:14,934 INFO L82 PathProgramCache]: Analyzing trace with hash 556957630, now seen corresponding path program 1 times [2020-09-25 04:27:14,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:14,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274101416] [2020-09-25 04:27:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-25 04:27:19,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:27:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:27:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:27:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:27:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:20,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:20,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:20,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:20,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:20,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:20,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:27:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:27:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:20,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:27:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:27:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:20,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:27:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 04:27:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:27:20,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:27:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:20,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:27:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:27:20,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274101416] [2020-09-25 04:27:20,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:20,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:20,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427638648] [2020-09-25 04:27:20,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:20,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:20,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:20,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:20,268 INFO L87 Difference]: Start difference. First operand 2341 states and 2815 transitions. Second operand 7 states. [2020-09-25 04:27:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:22,561 INFO L93 Difference]: Finished difference Result 5210 states and 6387 transitions. [2020-09-25 04:27:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:22,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-25 04:27:22,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:22,567 INFO L225 Difference]: With dead ends: 5210 [2020-09-25 04:27:22,567 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:27:22,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:27:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:27:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:27:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:27:22,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-09-25 04:27:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:22,584 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:27:22,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:27:22,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:27:22,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:27:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.