/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:48:04,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:48:04,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:48:04,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:48:04,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:48:04,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:48:04,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:48:04,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:48:04,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:48:04,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:48:04,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:48:04,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:48:04,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:48:04,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:48:04,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:48:04,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:48:04,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:48:04,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:48:04,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:48:04,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:48:04,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:48:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:48:04,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:48:04,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:48:04,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:48:04,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:48:04,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:48:04,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:48:04,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:48:04,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:48:04,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:48:04,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:48:04,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:48:04,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:48:04,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:48:04,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:48:04,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:48:04,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:48:04,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:48:04,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:48:04,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:48:04,215 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 [2020-09-24 23:48:04,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:48:04,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:48:04,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:48:04,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:48:04,246 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:48:04,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:48:04,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:48:04,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:48:04,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:48:04,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:48:04,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:48:04,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:48:04,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:48:04,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:48:04,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:48:04,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:48:04,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:48:04,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:48:04,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:48:04,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:48:04,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:48:04,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:48:04,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:48:04,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:48:04,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:48:04,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:48:04,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:48:04,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:48:04,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:48:04,251 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:48:04,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:48:04,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:48:04,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:48:04,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:48:04,762 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:48:04,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-24 23:48:04,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0a95ab62/078606632239438491f30fa838317fb7/FLAGd0fc87b4f [2020-09-24 23:48:05,424 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:48:05,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-24 23:48:05,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0a95ab62/078606632239438491f30fa838317fb7/FLAGd0fc87b4f [2020-09-24 23:48:05,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0a95ab62/078606632239438491f30fa838317fb7 [2020-09-24 23:48:05,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:48:05,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:48:05,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:48:05,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:48:05,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:48:05,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:48:05" (1/1) ... [2020-09-24 23:48:05,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:05, skipping insertion in model container [2020-09-24 23:48:05,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:48:05" (1/1) ... [2020-09-24 23:48:05,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:48:05,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:48:06,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:48:06,015 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:48:06,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:48:06,056 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:48:06,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06 WrapperNode [2020-09-24 23:48:06,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:48:06,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:48:06,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:48:06,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:48:06,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (1/1) ... [2020-09-24 23:48:06,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:48:06,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:48:06,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:48:06,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:48:06,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (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 [2020-09-24 23:48:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:48:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:48:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 23:48:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:48:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:48:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:48:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 23:48:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:48:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:48:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:48:06,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:48:06,492 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:48:06,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:48:06 BoogieIcfgContainer [2020-09-24 23:48:06,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:48:06,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:48:06,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:48:06,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:48:06,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:48:05" (1/3) ... [2020-09-24 23:48:06,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:48:06, skipping insertion in model container [2020-09-24 23:48:06,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:06" (2/3) ... [2020-09-24 23:48:06,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:48:06, skipping insertion in model container [2020-09-24 23:48:06,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:48:06" (3/3) ... [2020-09-24 23:48:06,507 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-09-24 23:48:06,519 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:48:06,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:48:06,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:48:06,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:48:06,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:48:06,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:48:06,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:48:06,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:48:06,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:48:06,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:48:06,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:48:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-24 23:48:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 23:48:06,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:06,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:06,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:06,630 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-24 23:48:06,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:06,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697275550] [2020-09-24 23:48:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:06,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:06,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:48:06,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:48:06,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 23:48:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:48:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:06,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:06,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:48:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:48:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 23:48:07,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:07,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:48:07,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697275550] [2020-09-24 23:48:07,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:07,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:48:07,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271514528] [2020-09-24 23:48:07,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:48:07,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:07,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:48:07,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:48:07,113 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-24 23:48:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:07,215 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-24 23:48:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:48:07,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 23:48:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:07,230 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:48:07,230 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:48:07,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:48:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:48:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:48:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:48:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-24 23:48:07,288 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-24 23:48:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:07,289 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-24 23:48:07,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:48:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-24 23:48:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 23:48:07,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:07,292 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 23:48:07,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:48:07,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-24 23:48:07,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:07,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225379675] [2020-09-24 23:48:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:48:07,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 23:48:07,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 23:48:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:07,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:07,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:07,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:48:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:48:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 23:48:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:48:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:07,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:48:07,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:48:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:48:07,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225379675] [2020-09-24 23:48:07,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:07,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:48:07,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656664017] [2020-09-24 23:48:07,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:48:07,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:07,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:48:07,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:48:07,982 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-09-24 23:48:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:08,055 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-24 23:48:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:48:08,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-24 23:48:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:08,059 INFO L225 Difference]: With dead ends: 49 [2020-09-24 23:48:08,059 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 23:48:08,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:48:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 23:48:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-09-24 23:48:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 23:48:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 23:48:08,076 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2020-09-24 23:48:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:08,077 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 23:48:08,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:48:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 23:48:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 23:48:08,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:08,083 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 23:48:08,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:48:08,084 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-24 23:48:08,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:08,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289053920] [2020-09-24 23:48:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:48:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-24 23:48:08,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 23:48:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:48:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:08,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:08,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:48:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:48:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 23:48:08,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:08,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:48:08,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:48:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:48:08,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289053920] [2020-09-24 23:48:08,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:08,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:48:08,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036635607] [2020-09-24 23:48:08,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:48:08,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:08,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:48:08,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:48:08,596 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-09-24 23:48:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:08,717 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-24 23:48:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:48:08,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-24 23:48:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:08,719 INFO L225 Difference]: With dead ends: 41 [2020-09-24 23:48:08,719 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 23:48:08,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 23:48:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 23:48:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 23:48:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-24 23:48:08,728 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-09-24 23:48:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:08,728 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-24 23:48:08,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:48:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-24 23:48:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 23:48:08,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:08,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 23:48:08,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:48:08,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:08,731 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times [2020-09-24 23:48:08,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:08,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871607956] [2020-09-24 23:48:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:48:09,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-09-24 23:48:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 23:48:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:48:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:09,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:09,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:48:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:48:09,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 23:48:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 23:48:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:48:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:48:09,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 23:48:09,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:09,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:09,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:48:09,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 23:48:09,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871607956] [2020-09-24 23:48:09,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:09,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:48:09,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169046044] [2020-09-24 23:48:09,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:48:09,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:09,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:48:09,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:48:09,587 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2020-09-24 23:48:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:09,667 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-09-24 23:48:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:48:09,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-24 23:48:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:09,669 INFO L225 Difference]: With dead ends: 56 [2020-09-24 23:48:09,669 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 23:48:09,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 23:48:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-24 23:48:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 23:48:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-24 23:48:09,678 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 38 [2020-09-24 23:48:09,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:09,679 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-24 23:48:09,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:48:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-24 23:48:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 23:48:09,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:09,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:09,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:48:09,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:09,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-09-24 23:48:09,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:09,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61059597] [2020-09-24 23:48:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:10,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:48:10,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:48:10,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-09-24 23:48:10,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:48:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 23:48:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:48:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:10,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:10,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:10,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:10,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:48:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:10,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:48:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:48:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-24 23:48:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:48:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:11,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:48:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 23:48:11,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:11,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:11,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:11,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:48:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 23:48:11,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61059597] [2020-09-24 23:48:11,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:11,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:48:11,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230382957] [2020-09-24 23:48:11,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:48:11,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:11,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:48:11,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:48:11,152 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 9 states. [2020-09-24 23:48:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:11,250 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-09-24 23:48:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:48:11,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-24 23:48:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:11,251 INFO L225 Difference]: With dead ends: 41 [2020-09-24 23:48:11,252 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 23:48:11,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:48:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 23:48:11,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 23:48:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 23:48:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 23:48:11,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-09-24 23:48:11,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:11,254 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 23:48:11,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:48:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 23:48:11,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 23:48:11,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:48:11,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 23:48:11,296 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 23:48:11,296 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:48:11,296 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:48:11,297 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 23:48:11,297 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 23:48:11,297 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:48:11,297 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-24 23:48:11,297 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-24 23:48:11,298 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-24 23:48:11,298 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 23:48:11,299 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 23:48:11,299 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 23:48:11,299 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-24 23:48:11,299 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 23:48:11,299 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 23:48:11,299 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 23:48:11,300 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 23:48:11,300 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-24 23:48:11,300 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-24 23:48:11,300 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 23:48:11,300 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 23:48:11,300 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 23:48:11,301 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 23:48:11,301 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-24 23:48:11,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:48:11 BoogieIcfgContainer [2020-09-24 23:48:11,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:48:11,315 INFO L168 Benchmark]: Toolchain (without parser) took 5557.51 ms. Allocated memory was 144.7 MB in the beginning and 250.6 MB in the end (delta: 105.9 MB). Free memory was 101.0 MB in the beginning and 165.5 MB in the end (delta: -64.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:48:11,316 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 23:48:11,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.26 ms. Allocated memory is still 144.7 MB. Free memory was 100.4 MB in the beginning and 91.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:48:11,323 INFO L168 Benchmark]: Boogie Preprocessor took 36.88 ms. Allocated memory is still 144.7 MB. Free memory was 91.1 MB in the beginning and 89.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:48:11,325 INFO L168 Benchmark]: RCFGBuilder took 402.64 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 89.8 MB in the beginning and 167.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:48:11,326 INFO L168 Benchmark]: TraceAbstraction took 4811.62 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 167.1 MB in the beginning and 165.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:48:11,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.26 ms. Allocated memory is still 144.7 MB. Free memory was 100.4 MB in the beginning and 91.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.88 ms. Allocated memory is still 144.7 MB. Free memory was 91.1 MB in the beginning and 89.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.64 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 89.8 MB in the beginning and 167.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4811.62 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 167.1 MB in the beginning and 165.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 28 SDslu, 496 SDs, 0 SdLazy, 151 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 32/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...