/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:59,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:59,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:59,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:59,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:59,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:59,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:59,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:59,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:59,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:59,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:59,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:59,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:59,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:59,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:59,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:59,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:59,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:59,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:59,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:59,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:59,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:59,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:59,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:59,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:59,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:59,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:59,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:59,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:59,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:59,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:59,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:59,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:59,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:59,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:59,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:59,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:59,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:59,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:59,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:59,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:59,199 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 11:19:59,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:59,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:59,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:59,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:59,228 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:59,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:59,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:59,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:59,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:59,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:59,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:59,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:59,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:59,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:59,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:59,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:59,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:59,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:59,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:59,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:59,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:59,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:59,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:59,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:59,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:59,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:59,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:59,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:59,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:59,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:59,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:59,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:59,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:59,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:59,744 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:59,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 11:19:59,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d48e56df/7537c28685194984b513eb1612f2e57d/FLAG41defcaaf [2020-09-25 11:20:00,473 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:00,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 11:20:00,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d48e56df/7537c28685194984b513eb1612f2e57d/FLAG41defcaaf [2020-09-25 11:20:00,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d48e56df/7537c28685194984b513eb1612f2e57d [2020-09-25 11:20:00,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:00,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:00,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:00,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:00,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:00,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229412e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00, skipping insertion in model container [2020-09-25 11:20:00,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:00,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:01,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:01,260 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:01,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:01,521 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:01,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01 WrapperNode [2020-09-25 11:20:01,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:01,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:01,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:01,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:01,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (1/1) ... [2020-09-25 11:20:01,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:01,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:01,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:01,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:01,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (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 11:20:01,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:01,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:01,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:01,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:03,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:03,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:03,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:03 BoogieIcfgContainer [2020-09-25 11:20:03,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:03,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:03,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:03,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:03,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:00" (1/3) ... [2020-09-25 11:20:03,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447d93ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:03, skipping insertion in model container [2020-09-25 11:20:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:01" (2/3) ... [2020-09-25 11:20:03,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447d93ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:03, skipping insertion in model container [2020-09-25 11:20:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:03" (3/3) ... [2020-09-25 11:20:03,267 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 11:20:03,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:03,292 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:03,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:03,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:03,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:03,352 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:03,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:03,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:03,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:03,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:03,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:20:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 11:20:03,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:03,395 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] [2020-09-25 11:20:03,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 11:20:03,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:03,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931037333] [2020-09-25 11:20:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 11:20:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-09-25 11:20:04,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:20:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:20:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:04,614 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 11:20:04,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931037333] [2020-09-25 11:20:04,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:04,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:20:04,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637677722] [2020-09-25 11:20:04,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:20:04,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:20:04,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:20:04,647 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:20:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:06,662 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:20:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:20:06,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 11:20:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:06,691 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:20:06,691 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:20:06,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 11:20:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:20:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:20:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:20:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:20:06,831 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 60 [2020-09-25 11:20:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:06,832 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:20:06,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:20:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:20:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 11:20:06,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:06,840 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, 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] [2020-09-25 11:20:06,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:06,841 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:06,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2017301439, now seen corresponding path program 1 times [2020-09-25 11:20:06,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:06,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114902779] [2020-09-25 11:20:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 11:20:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4241 [2020-09-25 11:20:11,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 11:20:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:11,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:11,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:11,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 11:20:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:20:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:20:11,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114902779] [2020-09-25 11:20:11,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:11,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:20:11,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24816649] [2020-09-25 11:20:11,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:11,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:11,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:11,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:11,475 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 11:20:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:13,193 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 11:20:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:20:13,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 11:20:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:13,200 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 11:20:13,200 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 11:20:13,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 11:20:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 11:20:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 11:20:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 11:20:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 11:20:13,246 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 139 [2020-09-25 11:20:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:13,247 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 11:20:13,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 11:20:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 11:20:13,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:13,252 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, 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] [2020-09-25 11:20:13,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:13,252 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 11:20:13,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:13,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602117894] [2020-09-25 11:20:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 11:20:17,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3749 [2020-09-25 11:20:17,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:17,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:20:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:17,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:17,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:17,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:17,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:17,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:17,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:17,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 11:20:17,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:17,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:17,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602117894] [2020-09-25 11:20:17,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:17,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:17,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104397494] [2020-09-25 11:20:17,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:17,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:17,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:17,520 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 11:20:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:20,804 INFO L93 Difference]: Finished difference Result 2932 states and 3692 transitions. [2020-09-25 11:20:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:20,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 11:20:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:20,828 INFO L225 Difference]: With dead ends: 2932 [2020-09-25 11:20:20,829 INFO L226 Difference]: Without dead ends: 2098 [2020-09-25 11:20:20,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:20:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-09-25 11:20:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1983. [2020-09-25 11:20:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 11:20:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2445 transitions. [2020-09-25 11:20:20,945 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2445 transitions. Word has length 149 [2020-09-25 11:20:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:20,948 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2445 transitions. [2020-09-25 11:20:20,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2445 transitions. [2020-09-25 11:20:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 11:20:20,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:20,962 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, 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, 1, 1, 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 11:20:20,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:20,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash -103369624, now seen corresponding path program 1 times [2020-09-25 11:20:20,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:20,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416829740] [2020-09-25 11:20:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 11:20:25,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:25,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4344 [2020-09-25 11:20:25,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:20:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-25 11:20:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:25,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:25,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:25,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:20:25,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:20:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 11:20:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:20:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 76 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:20:26,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416829740] [2020-09-25 11:20:26,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:26,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:26,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643824559] [2020-09-25 11:20:26,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:26,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:26,014 INFO L87 Difference]: Start difference. First operand 1983 states and 2445 transitions. Second operand 9 states. [2020-09-25 11:20:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:29,854 INFO L93 Difference]: Finished difference Result 5187 states and 6627 transitions. [2020-09-25 11:20:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:20:29,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-09-25 11:20:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:29,873 INFO L225 Difference]: With dead ends: 5187 [2020-09-25 11:20:29,874 INFO L226 Difference]: Without dead ends: 3219 [2020-09-25 11:20:29,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:20:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-09-25 11:20:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3134. [2020-09-25 11:20:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-09-25 11:20:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3934 transitions. [2020-09-25 11:20:29,986 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3934 transitions. Word has length 219 [2020-09-25 11:20:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:29,987 INFO L479 AbstractCegarLoop]: Abstraction has 3134 states and 3934 transitions. [2020-09-25 11:20:29,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3934 transitions. [2020-09-25 11:20:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 11:20:29,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:29,993 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:29,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:29,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1270686682, now seen corresponding path program 1 times [2020-09-25 11:20:29,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:29,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902907338] [2020-09-25 11:20:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 11:20:35,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:20:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-25 11:20:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:35,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 11:20:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:20:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:20:35,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:35,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:35,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 11:20:35,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:35,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:20:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:36,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 11:20:36,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:36,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:20:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:20:36,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902907338] [2020-09-25 11:20:36,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:36,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:36,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714107061] [2020-09-25 11:20:36,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:36,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:36,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:36,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:36,420 INFO L87 Difference]: Start difference. First operand 3134 states and 3934 transitions. Second operand 10 states. [2020-09-25 11:20:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:40,081 INFO L93 Difference]: Finished difference Result 7100 states and 9216 transitions. [2020-09-25 11:20:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:40,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 232 [2020-09-25 11:20:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:40,103 INFO L225 Difference]: With dead ends: 7100 [2020-09-25 11:20:40,103 INFO L226 Difference]: Without dead ends: 4093 [2020-09-25 11:20:40,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2020-09-25 11:20:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3889. [2020-09-25 11:20:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3889 states. [2020-09-25 11:20:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 4827 transitions. [2020-09-25 11:20:40,219 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 4827 transitions. Word has length 232 [2020-09-25 11:20:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:40,219 INFO L479 AbstractCegarLoop]: Abstraction has 3889 states and 4827 transitions. [2020-09-25 11:20:40,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 4827 transitions. [2020-09-25 11:20:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 11:20:40,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:40,225 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, 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, 1, 1, 1, 1, 1, 1, 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 11:20:40,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:40,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:40,226 INFO L82 PathProgramCache]: Analyzing trace with hash -396992247, now seen corresponding path program 1 times [2020-09-25 11:20:40,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:40,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334655439] [2020-09-25 11:20:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 11:20:45,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:20:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:20:45,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 11:20:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:45,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:20:45,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:45,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 11:20:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:20:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:20:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 11:20:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 11:20:46,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334655439] [2020-09-25 11:20:46,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:46,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:46,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477352639] [2020-09-25 11:20:46,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:46,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:46,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:46,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:46,030 INFO L87 Difference]: Start difference. First operand 3889 states and 4827 transitions. Second operand 10 states.