/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:30,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:30,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:30,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:30,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:30,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:30,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:30,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:30,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:30,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:30,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:30,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:30,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:30,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:30,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:30,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:30,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:30,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:30,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:30,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:30,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:30,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:30,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:30,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:30,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:30,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:30,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:30,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:30,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:30,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:30,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:30,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:30,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:30,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:30,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:30,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:30,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:30,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:30,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:30,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:30,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:30,228 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 05:33:30,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:30,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:30,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:30,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:30,259 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:30,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:30,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:30,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:30,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:30,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:30,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:30,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:30,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:30,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:30,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:30,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:30,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:30,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:30,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:30,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:30,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:30,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:30,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:30,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:30,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:30,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:30,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:30,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:30,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:30,264 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=0.4;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:33:30,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:30,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:30,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:30,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:30,774 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:30,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 05:33:30,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7b13d5f/f0b3eed46b9d413586a7199ee64d8fa7/FLAGf4b2c79da [2020-09-25 05:33:31,544 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:31,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 05:33:31,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7b13d5f/f0b3eed46b9d413586a7199ee64d8fa7/FLAGf4b2c79da [2020-09-25 05:33:31,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7b13d5f/f0b3eed46b9d413586a7199ee64d8fa7 [2020-09-25 05:33:31,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:31,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:31,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:31,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:31,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:31,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:31" (1/1) ... [2020-09-25 05:33:31,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:31, skipping insertion in model container [2020-09-25 05:33:31,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:31" (1/1) ... [2020-09-25 05:33:31,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:31,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:32,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:32,517 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:32,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:32,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:32,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32 WrapperNode [2020-09-25 05:33:32,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:32,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:32,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:32,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:32,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:32,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:32,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:32,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:32,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (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 05:33:32,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:32,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:32,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:32,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:34,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:34,283 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:34,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:34 BoogieIcfgContainer [2020-09-25 05:33:34,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:34,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:34,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:34,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:34,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:31" (1/3) ... [2020-09-25 05:33:34,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:34, skipping insertion in model container [2020-09-25 05:33:34,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (2/3) ... [2020-09-25 05:33:34,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:34, skipping insertion in model container [2020-09-25 05:33:34,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:34" (3/3) ... [2020-09-25 05:33:34,306 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 05:33:34,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:34,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:34,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:34,394 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:34,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:34,394 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:34,395 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:34,395 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:34,395 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:34,395 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:34,395 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 05:33:34,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:34,452 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] [2020-09-25 05:33:34,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 05:33:34,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:34,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-25 05:33:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:34,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:39,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:33:39,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:33:39,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:33:39,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:39,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 05:33:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:33:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:40,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:33:40,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:40,135 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 05:33:40,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-25 05:33:40,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:40,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:40,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084711141] [2020-09-25 05:33:40,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:40,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:40,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:40,170 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:42,258 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 05:33:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:42,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 05:33:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:42,305 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 05:33:42,306 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 05:33:42,320 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 05:33:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 05:33:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 05:33:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 05:33:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 05:33:42,440 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 114 [2020-09-25 05:33:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:42,441 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 05:33:42,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 05:33:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 05:33:42,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:42,452 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:42,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:42,452 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1104563352, now seen corresponding path program 1 times [2020-09-25 05:33:42,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:42,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671547720] [2020-09-25 05:33:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:45,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:33:45,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:33:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2530 [2020-09-25 05:33:45,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:45,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:33:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 05:33:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:45,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:45,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:45,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:45,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:33:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:45,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:33:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:45,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671547720] [2020-09-25 05:33:45,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:45,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:45,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134012318] [2020-09-25 05:33:45,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:45,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:45,301 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 05:33:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:47,415 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 05:33:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:47,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 05:33:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:47,422 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 05:33:47,422 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 05:33:47,425 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 05:33:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 05:33:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 05:33:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 05:33:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 05:33:47,465 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 135 [2020-09-25 05:33:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:47,465 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 05:33:47,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 05:33:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 05:33:47,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:47,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:33:47,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:47,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1460590075, now seen corresponding path program 1 times [2020-09-25 05:33:47,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:47,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808556810] [2020-09-25 05:33:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:33:52,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:33:52,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:52,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 05:33:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 05:33:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:52,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:52,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:52,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:33:52,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:52,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:52,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:33:52,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:33:52,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:52,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:33:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:33:52,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808556810] [2020-09-25 05:33:52,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:52,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:52,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086383777] [2020-09-25 05:33:52,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:52,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:52,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:52,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:52,756 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 5 states. [2020-09-25 05:33:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:55,003 INFO L93 Difference]: Finished difference Result 2551 states and 3165 transitions. [2020-09-25 05:33:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:55,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 05:33:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:55,015 INFO L225 Difference]: With dead ends: 2551 [2020-09-25 05:33:55,016 INFO L226 Difference]: Without dead ends: 1625 [2020-09-25 05:33:55,020 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 05:33:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-09-25 05:33:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1238. [2020-09-25 05:33:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-09-25 05:33:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1551 transitions. [2020-09-25 05:33:55,073 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1551 transitions. Word has length 152 [2020-09-25 05:33:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:55,074 INFO L479 AbstractCegarLoop]: Abstraction has 1238 states and 1551 transitions. [2020-09-25 05:33:55,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1551 transitions. [2020-09-25 05:33:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 05:33:55,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:55,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:55,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:55,081 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1826040530, now seen corresponding path program 1 times [2020-09-25 05:33:55,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:55,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235496344] [2020-09-25 05:33:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 05:34:00,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 05:34:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:34:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:34:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:00,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:00,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:00,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:00,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:34:00,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:34:00,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:34:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:00,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235496344] [2020-09-25 05:34:00,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:00,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:00,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048859859] [2020-09-25 05:34:00,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:00,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:00,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:00,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:00,755 INFO L87 Difference]: Start difference. First operand 1238 states and 1551 transitions. Second operand 7 states. [2020-09-25 05:34:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:03,292 INFO L93 Difference]: Finished difference Result 3428 states and 4457 transitions. [2020-09-25 05:34:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:34:03,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-25 05:34:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:03,317 INFO L225 Difference]: With dead ends: 3428 [2020-09-25 05:34:03,317 INFO L226 Difference]: Without dead ends: 2214 [2020-09-25 05:34:03,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-09-25 05:34:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2112. [2020-09-25 05:34:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-09-25 05:34:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2708 transitions. [2020-09-25 05:34:03,408 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2708 transitions. Word has length 196 [2020-09-25 05:34:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:03,409 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 2708 transitions. [2020-09-25 05:34:03,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2708 transitions. [2020-09-25 05:34:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 05:34:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:03,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:03,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:03,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash -513686346, now seen corresponding path program 1 times [2020-09-25 05:34:03,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:03,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546304618] [2020-09-25 05:34:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 05:34:08,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:34:08,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 05:34:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:34:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:08,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:08,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:08,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:08,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:08,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:34:08,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:34:08,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:34:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 05:34:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:34:08,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 05:34:08,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:34:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:08,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546304618] [2020-09-25 05:34:08,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:08,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:08,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089322240] [2020-09-25 05:34:08,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:08,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:08,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:08,928 INFO L87 Difference]: Start difference. First operand 2112 states and 2708 transitions. Second operand 7 states. [2020-09-25 05:34:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:11,345 INFO L93 Difference]: Finished difference Result 5449 states and 7139 transitions. [2020-09-25 05:34:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:11,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 05:34:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:11,365 INFO L225 Difference]: With dead ends: 5449 [2020-09-25 05:34:11,365 INFO L226 Difference]: Without dead ends: 3361 [2020-09-25 05:34:11,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2020-09-25 05:34:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2706. [2020-09-25 05:34:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-09-25 05:34:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3517 transitions. [2020-09-25 05:34:11,503 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3517 transitions. Word has length 222 [2020-09-25 05:34:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:11,504 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 3517 transitions. [2020-09-25 05:34:11,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3517 transitions. [2020-09-25 05:34:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 05:34:11,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:11,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-09-25 05:34:11,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:11,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1636213025, now seen corresponding path program 1 times [2020-09-25 05:34:11,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:11,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184069368] [2020-09-25 05:34:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:11,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:16,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 05:34:16,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:34:16,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:16,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 05:34:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:34:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:16,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:16,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:16,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:16,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:34:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:16,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:16,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:34:16,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 05:34:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:16,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:34:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 05:34:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:16,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:34:16,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 05:34:16,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:16,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:34:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 05:34:17,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184069368] [2020-09-25 05:34:17,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:17,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:17,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392360056] [2020-09-25 05:34:17,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:17,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:17,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:17,006 INFO L87 Difference]: Start difference. First operand 2706 states and 3517 transitions. Second operand 7 states.