/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapavg2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:35:01,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:35:01,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:35:01,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:35:01,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:35:01,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:35:01,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:35:01,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:35:01,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:35:01,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:35:01,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:35:01,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:35:01,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:35:01,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:35:01,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:35:01,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:35:01,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:35:01,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:35:01,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:35:01,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:35:01,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:35:01,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:35:01,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:35:01,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:35:01,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:35:01,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:35:01,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:35:01,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:35:01,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:35:01,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:35:01,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:35:01,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:35:01,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:35:01,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:35:01,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:35:01,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:35:01,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:35:01,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:35:01,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:35:01,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:35:01,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:35:01,851 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 [2020-10-12 09:35:01,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:35:01,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:35:01,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:35:01,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:35:01,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:35:01,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:35:01,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:35:01,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:35:01,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:35:01,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:35:01,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:35:01,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:35:01,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:35:01,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:35:01,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:35:01,896 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:35:01,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:35:01,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:35:01,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:35:01,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:35:01,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:35:01,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:35:01,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:35:01,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:35:01,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:35:01,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:35:01,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:35:01,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:35:01,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:35:01,898 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:35:02,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:35:02,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:35:02,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:35:02,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:35:02,265 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:35:02,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg2.i [2020-10-12 09:35:02,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5aae35d33/a2d2c5a3ee8047f4bbd83193b56c967c/FLAG19ca22232 [2020-10-12 09:35:02,775 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:35:02,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg2.i [2020-10-12 09:35:02,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5aae35d33/a2d2c5a3ee8047f4bbd83193b56c967c/FLAG19ca22232 [2020-10-12 09:35:03,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5aae35d33/a2d2c5a3ee8047f4bbd83193b56c967c [2020-10-12 09:35:03,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:35:03,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:35:03,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:03,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:35:03,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:35:03,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03, skipping insertion in model container [2020-10-12 09:35:03,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:35:03,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:35:03,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:03,409 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:35:03,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:03,446 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:35:03,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03 WrapperNode [2020-10-12 09:35:03,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:03,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:35:03,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:35:03,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:35:03,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (1/1) ... [2020-10-12 09:35:03,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:35:03,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:35:03,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:35:03,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:35:03,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (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 [2020-10-12 09:35:03,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:35:03,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:35:03,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-12 09:35:03,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:35:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:35:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:35:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-12 09:35:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:35:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:35:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:35:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:35:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:35:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:35:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:35:03,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:35:03,905 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:35:03,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:03 BoogieIcfgContainer [2020-10-12 09:35:03,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:35:03,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:35:03,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:35:03,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:35:03,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:35:03" (1/3) ... [2020-10-12 09:35:03,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a9f5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:03, skipping insertion in model container [2020-10-12 09:35:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:03" (2/3) ... [2020-10-12 09:35:03,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a9f5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:03, skipping insertion in model container [2020-10-12 09:35:03,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:03" (3/3) ... [2020-10-12 09:35:03,922 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg2.i [2020-10-12 09:35:03,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:35:03,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:35:03,976 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:35:04,008 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:35:04,009 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:35:04,009 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:35:04,009 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:35:04,009 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:35:04,010 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:35:04,010 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:35:04,010 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:35:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:35:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:35:04,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:04,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:04,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:04,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:04,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1234592251, now seen corresponding path program 1 times [2020-10-12 09:35:04,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:04,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571831979] [2020-10-12 09:35:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:05,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:05,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:35:05,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:05,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-10-12 09:35:05,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 09:35:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:35:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:05,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:05,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 09:35:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:06,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:35:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:06,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:06,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 09:35:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:35:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 09:35:06,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571831979] [2020-10-12 09:35:06,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:06,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:35:06,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438544374] [2020-10-12 09:35:06,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:35:06,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:35:06,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:35:06,556 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 12 states. [2020-10-12 09:35:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:07,152 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 09:35:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:07,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-12 09:35:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:07,173 INFO L225 Difference]: With dead ends: 83 [2020-10-12 09:35:07,173 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:35:07,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:35:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:35:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 09:35:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 09:35:07,277 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 09:35:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:07,278 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 09:35:07,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:35:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 09:35:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 09:35:07,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:07,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:07,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:35:07,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1657693223, now seen corresponding path program 1 times [2020-10-12 09:35:07,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:07,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933584824] [2020-10-12 09:35:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:08,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:35:08,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-12 09:35:08,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 09:35:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:08,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:08,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:08,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:08,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:08,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:35:08,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:08,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:08,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:08,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:35:08,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933584824] [2020-10-12 09:35:08,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:08,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:35:08,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694302816] [2020-10-12 09:35:08,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:35:08,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:08,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:35:08,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:08,871 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 09:35:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:09,019 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 09:35:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:35:09,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 09:35:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:09,022 INFO L225 Difference]: With dead ends: 58 [2020-10-12 09:35:09,022 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:35:09,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:35:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:35:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:35:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:35:09,031 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 09:35:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:09,031 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:35:09,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:35:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:35:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:35:09,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:09,034 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:09,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:35:09,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:09,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1270883063, now seen corresponding path program 2 times [2020-10-12 09:35:09,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:09,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983002393] [2020-10-12 09:35:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:35:14,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:14,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:35:14,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 09:35:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:14,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:14,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:14,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 09:35:14,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:14,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 09:35:14,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:14,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983002393] [2020-10-12 09:35:14,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:14,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:35:14,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085026175] [2020-10-12 09:35:14,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:35:14,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:14,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:35:14,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:35:14,237 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 09:35:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:14,360 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 09:35:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:35:14,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 09:35:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:14,362 INFO L225 Difference]: With dead ends: 52 [2020-10-12 09:35:14,362 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 09:35:14,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 09:35:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 09:35:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 09:35:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 09:35:14,369 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 09:35:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:14,370 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 09:35:14,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:35:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 09:35:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 09:35:14,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:14,372 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:14,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:35:14,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1580837035, now seen corresponding path program 3 times [2020-10-12 09:35:14,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:14,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515828636] [2020-10-12 09:35:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:35:19,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:19,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:19,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:19,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:19,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:19,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:35:19,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 09:35:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:19,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:19,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 09:35:19,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 09:35:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:19,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 09:35:19,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 09:35:19,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515828636] [2020-10-12 09:35:19,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:19,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:35:19,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192332289] [2020-10-12 09:35:19,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:35:19,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:19,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:35:19,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:19,574 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 09:35:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:19,713 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 09:35:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:35:19,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 09:35:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:19,714 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:19,714 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:35:19,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:35:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:35:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:35:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:35:19,721 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 09:35:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:19,721 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:35:19,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:35:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:35:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:35:19,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:19,723 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:19,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:35:19,723 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:19,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1586793779, now seen corresponding path program 4 times [2020-10-12 09:35:19,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:19,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295730916] [2020-10-12 09:35:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:35:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:35:24,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 09:35:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:24,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:24,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:24,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:24,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 09:35:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:24,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:35:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 09:35:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:35:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:24,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:24,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:24,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:24,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:35:24,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295730916] [2020-10-12 09:35:24,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:24,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:35:24,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924970684] [2020-10-12 09:35:24,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:35:24,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:24,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:35:24,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:35:24,950 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:35:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:25,098 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:35:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:35:25,099 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:35:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:25,100 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:35:25,100 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:35:25,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:35:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:35:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:35:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:35:25,106 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:35:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:25,107 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:35:25,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:35:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:35:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:35:25,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:25,108 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:25,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:35:25,109 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:25,109 INFO L82 PathProgramCache]: Analyzing trace with hash -131914607, now seen corresponding path program 5 times [2020-10-12 09:35:25,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:25,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095258925] [2020-10-12 09:35:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:35:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6062 [2020-10-12 09:35:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-12 09:35:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:35:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 09:35:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:38,254 WARN L193 SmtUtils]: Spent 5.89 s on a formula simplification. DAG size of input: 155 DAG size of output: 112 [2020-10-12 09:35:59,245 WARN L193 SmtUtils]: Spent 19.55 s on a formula simplification. DAG size of input: 203 DAG size of output: 91 [2020-10-12 09:36:37,078 WARN L193 SmtUtils]: Spent 33.57 s on a formula simplification. DAG size of input: 188 DAG size of output: 131 [2020-10-12 09:37:26,010 WARN L193 SmtUtils]: Spent 45.90 s on a formula simplification. DAG size of input: 182 DAG size of output: 92 [2020-10-12 09:37:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:30,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:30,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:30,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:37:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-12 09:37:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:37:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:37:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:38,941 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2020-10-12 09:37:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:37:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:42,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:42,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:37:42,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3276 [2020-10-12 09:37:42,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:37:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:37:42,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0