/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=0.6 --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/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:24,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:24,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:24,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:24,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:24,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:24,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:24,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:24,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:24,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:24,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:24,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:24,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:24,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:24,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:24,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:24,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:24,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:24,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:24,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:24,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:24,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:24,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:24,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:24,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:24,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:24,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:24,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:24,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:24,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:24,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:24,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:24,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:24,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:24,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:24,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:24,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:24,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:24,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:24,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:24,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:24,289 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 06:47:24,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:24,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:24,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:24,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:24,336 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:24,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:24,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:24,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:24,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:24,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:24,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:24,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:24,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:24,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:24,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:24,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:24,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:24,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:24,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:24,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:24,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:24,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:24,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:24,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:24,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:24,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:24,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:24,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:24,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:24,342 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:24,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:24,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:24,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:24,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:24,791 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:24,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 06:47:24,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d627f773/46f957c1c21a4e89b4103640c9ef9fef/FLAG14675ecb2 [2020-09-25 06:47:25,504 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:25,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 06:47:25,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d627f773/46f957c1c21a4e89b4103640c9ef9fef/FLAG14675ecb2 [2020-09-25 06:47:25,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d627f773/46f957c1c21a4e89b4103640c9ef9fef [2020-09-25 06:47:25,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:25,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:25,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:25,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:25,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:25,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:25" (1/1) ... [2020-09-25 06:47:25,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a43b6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:25, skipping insertion in model container [2020-09-25 06:47:25,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:25" (1/1) ... [2020-09-25 06:47:25,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:25,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:26,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:26,387 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:26,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:26,719 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:26,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26 WrapperNode [2020-09-25 06:47:26,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:26,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:26,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:26,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:26,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (1/1) ... [2020-09-25 06:47:26,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:26,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:26,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:26,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:26,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (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 06:47:26,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:26,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:26,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:26,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:28,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:28,315 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:28,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:28 BoogieIcfgContainer [2020-09-25 06:47:28,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:28,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:28,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:28,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:28,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:25" (1/3) ... [2020-09-25 06:47:28,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:28, skipping insertion in model container [2020-09-25 06:47:28,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:26" (2/3) ... [2020-09-25 06:47:28,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:28, skipping insertion in model container [2020-09-25 06:47:28,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:28" (3/3) ... [2020-09-25 06:47:28,333 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 06:47:28,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:28,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:28,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:28,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:28,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:28,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:28,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:28,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:28,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:28,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:28,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 06:47:28,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:28,454 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] [2020-09-25 06:47:28,454 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 06:47:28,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:28,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566386804] [2020-09-25 06:47:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 06:47:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-25 06:47:29,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:29,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:47:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:29,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:47:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:29,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:29,662 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 06:47:29,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566386804] [2020-09-25 06:47:29,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:29,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:29,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724335073] [2020-09-25 06:47:29,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:29,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:29,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:29,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:29,701 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:31,600 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:47:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:31,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 06:47:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:31,627 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:47:31,627 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:47:31,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:47:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:47:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:47:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:47:31,731 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-25 06:47:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:31,732 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:47:31,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:47:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 06:47:31,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:31,742 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, 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] [2020-09-25 06:47:31,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:31,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 06:47:31,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:31,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899455347] [2020-09-25 06:47:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:36,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:36,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 06:47:36,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4871 [2020-09-25 06:47:36,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:36,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:47:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:36,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:36,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:36,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:36,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:36,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:36,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 06:47:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:36,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:36,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899455347] [2020-09-25 06:47:36,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:36,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:36,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537515228] [2020-09-25 06:47:36,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:36,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:36,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:36,924 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 06:47:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:38,641 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 06:47:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:38,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 06:47:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:38,649 INFO L225 Difference]: With dead ends: 698 [2020-09-25 06:47:38,649 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 06:47:38,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 06:47:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 06:47:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 06:47:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 06:47:38,711 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 132 [2020-09-25 06:47:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:38,714 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 06:47:38,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 06:47:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 06:47:38,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:38,722 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, 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] [2020-09-25 06:47:38,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:38,728 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:38,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 06:47:38,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:38,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166646759] [2020-09-25 06:47:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 06:47:41,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2486 [2020-09-25 06:47:41,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:47:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:47:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:41,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:47:41,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 06:47:41,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:47:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:41,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166646759] [2020-09-25 06:47:41,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:41,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:41,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453393183] [2020-09-25 06:47:41,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:41,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:41,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:41,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:41,541 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 5 states. [2020-09-25 06:47:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:43,533 INFO L93 Difference]: Finished difference Result 1700 states and 2254 transitions. [2020-09-25 06:47:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:43,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 06:47:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:43,541 INFO L225 Difference]: With dead ends: 1700 [2020-09-25 06:47:43,541 INFO L226 Difference]: Without dead ends: 1170 [2020-09-25 06:47:43,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-25 06:47:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1150. [2020-09-25 06:47:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-09-25 06:47:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1437 transitions. [2020-09-25 06:47:43,578 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1437 transitions. Word has length 142 [2020-09-25 06:47:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:43,579 INFO L479 AbstractCegarLoop]: Abstraction has 1150 states and 1437 transitions. [2020-09-25 06:47:43,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1437 transitions. [2020-09-25 06:47:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 06:47:43,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:43,582 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, 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] [2020-09-25 06:47:43,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:43,583 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:43,583 INFO L82 PathProgramCache]: Analyzing trace with hash -463375426, now seen corresponding path program 1 times [2020-09-25 06:47:43,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:43,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040190707] [2020-09-25 06:47:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 06:47:47,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4095 [2020-09-25 06:47:47,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:47:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:47:47,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:47:47,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 06:47:47,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:47:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:48,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040190707] [2020-09-25 06:47:48,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:48,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:48,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219938725] [2020-09-25 06:47:48,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:48,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:48,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:48,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:48,159 INFO L87 Difference]: Start difference. First operand 1150 states and 1437 transitions. Second operand 7 states. [2020-09-25 06:47:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:50,538 INFO L93 Difference]: Finished difference Result 2330 states and 3050 transitions. [2020-09-25 06:47:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:47:50,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-09-25 06:47:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:50,546 INFO L225 Difference]: With dead ends: 2330 [2020-09-25 06:47:50,547 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 06:47:50,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:47:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 06:47:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1015. [2020-09-25 06:47:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-25 06:47:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1257 transitions. [2020-09-25 06:47:50,591 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1257 transitions. Word has length 161 [2020-09-25 06:47:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:50,591 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1257 transitions. [2020-09-25 06:47:50,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1257 transitions. [2020-09-25 06:47:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 06:47:50,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:50,596 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, 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, 1, 1, 1, 1, 1, 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 06:47:50,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:50,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:50,597 INFO L82 PathProgramCache]: Analyzing trace with hash -482318154, now seen corresponding path program 1 times [2020-09-25 06:47:50,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:50,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205947191] [2020-09-25 06:47:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:55,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 06:47:55,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:47:55,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:55,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 06:47:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:55,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:55,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:55,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:55,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:55,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:55,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:55,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 06:47:55,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:55,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:55,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:56,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 06:47:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:56,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:56,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205947191] [2020-09-25 06:47:56,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:56,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:56,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264172323] [2020-09-25 06:47:56,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:56,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:56,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:56,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:56,092 INFO L87 Difference]: Start difference. First operand 1015 states and 1257 transitions. Second operand 7 states. [2020-09-25 06:47:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:58,211 INFO L93 Difference]: Finished difference Result 2345 states and 3184 transitions. [2020-09-25 06:47:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:58,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 06:47:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:58,227 INFO L225 Difference]: With dead ends: 2345 [2020-09-25 06:47:58,227 INFO L226 Difference]: Without dead ends: 1495 [2020-09-25 06:47:58,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2020-09-25 06:47:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1341. [2020-09-25 06:47:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 06:47:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1606 transitions. [2020-09-25 06:47:58,296 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1606 transitions. Word has length 215 [2020-09-25 06:47:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:58,297 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1606 transitions. [2020-09-25 06:47:58,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1606 transitions. [2020-09-25 06:47:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 06:47:58,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:58,301 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:58,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:58,302 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1465784404, now seen corresponding path program 1 times [2020-09-25 06:47:58,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:58,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760558527] [2020-09-25 06:47:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:03,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 06:48:03,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:48:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:48:03,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:03,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:03,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:03,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:48:03,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:03,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:03,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:03,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 06:48:03,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:03,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:03,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:03,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760558527] [2020-09-25 06:48:03,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:03,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:48:03,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080636164] [2020-09-25 06:48:03,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:03,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:03,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:03,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:03,800 INFO L87 Difference]: Start difference. First operand 1341 states and 1606 transitions. Second operand 8 states. [2020-09-25 06:48:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:06,547 INFO L93 Difference]: Finished difference Result 2853 states and 3484 transitions. [2020-09-25 06:48:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:48:06,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 06:48:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:06,554 INFO L225 Difference]: With dead ends: 2853 [2020-09-25 06:48:06,555 INFO L226 Difference]: Without dead ends: 1341 [2020-09-25 06:48:06,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:48:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-25 06:48:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1301. [2020-09-25 06:48:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-25 06:48:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1446 transitions. [2020-09-25 06:48:06,590 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1446 transitions. Word has length 225 [2020-09-25 06:48:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:06,591 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1446 transitions. [2020-09-25 06:48:06,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1446 transitions. [2020-09-25 06:48:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 06:48:06,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:06,595 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:06,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:06,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:06,596 INFO L82 PathProgramCache]: Analyzing trace with hash -367593207, now seen corresponding path program 1 times [2020-09-25 06:48:06,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:06,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150214530] [2020-09-25 06:48:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 06:48:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:11,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:11,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:11,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:48:11,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:11,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:48:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:11,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:11,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 06:48:11,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 06:48:11,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:11,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:48:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:12,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150214530] [2020-09-25 06:48:12,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:12,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:48:12,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730622339] [2020-09-25 06:48:12,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:12,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:12,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:12,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:12,070 INFO L87 Difference]: Start difference. First operand 1301 states and 1446 transitions. Second operand 8 states. [2020-09-25 06:48:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:14,620 INFO L93 Difference]: Finished difference Result 3902 states and 4518 transitions. [2020-09-25 06:48:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:14,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-09-25 06:48:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:14,635 INFO L225 Difference]: With dead ends: 3902 [2020-09-25 06:48:14,636 INFO L226 Difference]: Without dead ends: 2428 [2020-09-25 06:48:14,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:48:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2020-09-25 06:48:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2386. [2020-09-25 06:48:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-09-25 06:48:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 2692 transitions. [2020-09-25 06:48:14,695 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 2692 transitions. Word has length 230 [2020-09-25 06:48:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:14,696 INFO L479 AbstractCegarLoop]: Abstraction has 2386 states and 2692 transitions. [2020-09-25 06:48:14,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 2692 transitions. [2020-09-25 06:48:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-25 06:48:14,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:14,705 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, 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, 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] [2020-09-25 06:48:14,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:48:14,706 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:14,706 INFO L82 PathProgramCache]: Analyzing trace with hash -412371594, now seen corresponding path program 1 times [2020-09-25 06:48:14,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:14,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456634497] [2020-09-25 06:48:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking...