/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:18:07,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:18:07,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:18:07,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:18:07,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:18:07,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:18:07,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:18:07,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:18:07,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:18:07,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:18:07,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:18:07,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:18:07,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:18:07,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:18:07,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:18:07,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:18:07,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:18:07,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:18:07,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:18:07,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:18:07,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:18:07,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:18:07,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:18:07,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:18:07,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:18:07,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:18:07,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:18:07,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:18:07,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:18:07,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:18:07,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:18:07,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:18:07,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:18:07,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:18:07,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:18:07,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:18:07,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:18:07,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:18:07,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:18:07,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:18:07,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:18:07,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:18:07,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:18:07,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:18:07,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:18:07,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:18:07,860 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:18:07,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:18:07,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:18:07,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:18:07,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:18:07,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:18:07,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:18:07,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:18:07,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:18:07,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:18:07,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:18:07,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:18:07,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:18:07,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:18:07,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:18:07,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:18:07,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:18:07,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:07,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:18:07,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:18:07,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:18:07,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:18:07,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:18:07,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:18:07,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:18:07,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:18:08,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:18:08,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:18:08,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:18:08,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:18:08,429 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:18:08,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-25 04:18:08,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b8f45bbf/63a3eed8e0de4cf08068e0635e9dca48/FLAG7e25d1290 [2020-09-25 04:18:09,127 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:18:09,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-25 04:18:09,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b8f45bbf/63a3eed8e0de4cf08068e0635e9dca48/FLAG7e25d1290 [2020-09-25 04:18:09,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b8f45bbf/63a3eed8e0de4cf08068e0635e9dca48 [2020-09-25 04:18:09,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:18:09,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:18:09,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:09,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:18:09,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:18:09,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd12457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09, skipping insertion in model container [2020-09-25 04:18:09,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:18:09,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:18:09,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:09,744 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:18:09,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:09,783 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:18:09,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09 WrapperNode [2020-09-25 04:18:09,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:09,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:18:09,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:18:09,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:18:09,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:18:09,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:18:09,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:18:09,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:18:09,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:18:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:18:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:18:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:18:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:18:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:18:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:18:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:18:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:18:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:18:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:18:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:18:10,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:18:10,228 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:18:10,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:10 BoogieIcfgContainer [2020-09-25 04:18:10,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:18:10,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:18:10,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:18:10,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:18:10,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:18:09" (1/3) ... [2020-09-25 04:18:10,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fecb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:10, skipping insertion in model container [2020-09-25 04:18:10,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (2/3) ... [2020-09-25 04:18:10,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fecb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:10, skipping insertion in model container [2020-09-25 04:18:10,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:10" (3/3) ... [2020-09-25 04:18:10,244 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2020-09-25 04:18:10,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:18:10,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:18:10,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:18:10,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:18:10,373 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:18:10,373 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:18:10,373 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:18:10,373 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:18:10,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:18:10,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:18:10,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:18:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:18:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:18:10,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:10,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:10,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:18:10,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:10,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055717771] [2020-09-25 04:18:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:10,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:18:10,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:10,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:18:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:18:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:10,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:10,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:10,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:10,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:10,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:18:10,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:10,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:18:10,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055717771] [2020-09-25 04:18:10,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:10,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:10,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462741454] [2020-09-25 04:18:10,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:10,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:10,783 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:18:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:10,921 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:18:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:10,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:18:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:10,938 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:10,939 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:18:10,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:18:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:18:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:11,007 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:18:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:11,008 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:11,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:18:11,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:11,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:11,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:18:11,011 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:11,012 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:18:11,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:11,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464875976] [2020-09-25 04:18:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:18:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 04:18:11,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:18:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:11,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:18:11,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:11,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 04:18:11,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:18:11,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464875976] [2020-09-25 04:18:11,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:11,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:11,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194968612] [2020-09-25 04:18:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:11,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:11,325 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:18:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:11,404 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:18:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:11,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:18:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:11,407 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:18:11,407 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:18:11,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:18:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:18:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:11,419 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:18:11,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:11,419 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:11,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:18:11,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:11,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:11,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:18:11,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:11,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:18:11,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:11,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729796569] [2020-09-25 04:18:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:18:12,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-09-25 04:18:12,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:12,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:18:12,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:18:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:12,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:12,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:12,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:12,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 04:18:12,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:12,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:12,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:12,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:12,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:12,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:12,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:12,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:12,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:18:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:12,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:12,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729796569] [2020-09-25 04:18:12,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:12,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:18:12,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979582677] [2020-09-25 04:18:12,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:12,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:12,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:12,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:12,526 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:18:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:12,648 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:18:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:12,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:18:12,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:12,651 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:12,651 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:18:12,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:18:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:18:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:12,663 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:18:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:12,664 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:12,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:18:12,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:12,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:12,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:18:12,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:12,668 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:18:12,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:12,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18018591] [2020-09-25 04:18:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:18:13,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-25 04:18:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:18:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:13,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:13,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:18:13,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-25 04:18:13,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:18:13,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:13,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:18:13,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:13,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:13,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:13,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:13,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18018591] [2020-09-25 04:18:13,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:13,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:18:13,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174267821] [2020-09-25 04:18:13,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:13,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:13,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:13,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:13,842 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:18:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:13,964 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 04:18:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:13,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:18:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:13,967 INFO L225 Difference]: With dead ends: 110 [2020-09-25 04:18:13,967 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:18:13,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:18:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 04:18:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:18:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 04:18:13,980 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 04:18:13,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:13,981 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 04:18:13,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 04:18:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:18:13,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:13,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:13,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:18:13,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:13,985 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:18:13,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:13,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644101465] [2020-09-25 04:18:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:14,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:18,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:18,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:18:18,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:18:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:18:18,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:18,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:18:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:19,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:19,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:19,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:18:22,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:18:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3221 [2020-09-25 04:18:22,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:18:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:18:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:22,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:22,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:22,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:18:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 04:18:22,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644101465] [2020-09-25 04:18:22,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:22,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:18:22,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317653602] [2020-09-25 04:18:22,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:22,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:22,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:22,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:22,426 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 04:18:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:22,537 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 04:18:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:22,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:18:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:22,540 INFO L225 Difference]: With dead ends: 66 [2020-09-25 04:18:22,540 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 04:18:22,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 04:18:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 04:18:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:18:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 04:18:22,551 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 04:18:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:22,551 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 04:18:22,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 04:18:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:18:22,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:22,554 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:22,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:18:22,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:18:22,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:22,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965960102] [2020-09-25 04:18:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:27,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:27,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:18:27,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:18:27,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:18:27,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:27,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:18:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:27,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:27,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:27,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:29,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:18:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:32,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:32,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:32,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:32,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:18:32,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:18:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:32,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:18:32,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:32,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:32,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:32,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:32,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:18:32,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965960102] [2020-09-25 04:18:32,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:32,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:18:32,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964944945] [2020-09-25 04:18:32,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:18:32,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:32,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:18:32,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:32,788 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 6 states. [2020-09-25 04:18:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:32,878 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2020-09-25 04:18:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:32,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:18:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:32,883 INFO L225 Difference]: With dead ends: 104 [2020-09-25 04:18:32,883 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 04:18:32,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 04:18:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 04:18:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 04:18:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2020-09-25 04:18:32,905 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 67 [2020-09-25 04:18:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:32,905 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2020-09-25 04:18:32,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:18:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2020-09-25 04:18:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:18:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:32,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:32,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:18:32,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:18:32,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:32,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225823327] [2020-09-25 04:18:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:37,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:18:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:18:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:18:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:37,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:18:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:18:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:37,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:37,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:37,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:37,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:37,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:39,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:42,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:42,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:18:42,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:18:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:18:42,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:42,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:18:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:18:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:43,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:18:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:43,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:18:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:43,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:43,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:43,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:18:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:43,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:43,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:43,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:18:43,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:43,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:18:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:43,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:43,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:43,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:43,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 04:18:43,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225823327] [2020-09-25 04:18:43,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:43,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:18:43,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374128886] [2020-09-25 04:18:43,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:18:43,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:43,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:18:43,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:43,364 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 9 states. [2020-09-25 04:18:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:43,548 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-09-25 04:18:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:18:43,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 04:18:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:43,551 INFO L225 Difference]: With dead ends: 88 [2020-09-25 04:18:43,551 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 04:18:43,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:18:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 04:18:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2020-09-25 04:18:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 04:18:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2020-09-25 04:18:43,572 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 69 [2020-09-25 04:18:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:43,573 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2020-09-25 04:18:43,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:18:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2020-09-25 04:18:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 04:18:43,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:43,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:43,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:18:43,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:43,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:43,576 INFO L82 PathProgramCache]: Analyzing trace with hash 261409208, now seen corresponding path program 2 times [2020-09-25 04:18:43,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:43,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015779530] [2020-09-25 04:18:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:48,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:18:48,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:18:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:18:48,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:48,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:18:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:18:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:48,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:50,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:50,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 04:18:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:18:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-09-25 04:18:50,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:50,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:18:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:18:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:50,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:50,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:18:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 04:18:50,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:50,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:18:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:18:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:51,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:51,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:18:51,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:51,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:51,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:18:51,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:51,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:51,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 04:18:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:51,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:18:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 04:18:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:51,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:51,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:51,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:51,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:51,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 04:18:51,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015779530] [2020-09-25 04:18:51,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:51,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:18:51,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042745449] [2020-09-25 04:18:51,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:18:51,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:51,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:18:51,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:51,136 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand 6 states. [2020-09-25 04:18:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:51,243 INFO L93 Difference]: Finished difference Result 142 states and 218 transitions. [2020-09-25 04:18:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:51,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-25 04:18:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:51,247 INFO L225 Difference]: With dead ends: 142 [2020-09-25 04:18:51,247 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 04:18:51,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:18:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 04:18:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2020-09-25 04:18:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:18:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-09-25 04:18:51,275 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 70 [2020-09-25 04:18:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:51,276 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-09-25 04:18:51,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:18:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-09-25 04:18:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 04:18:51,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:51,278 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:51,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:18:51,280 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 04:18:51,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:51,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123418302] [2020-09-25 04:18:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:56,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:18:56,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:18:56,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:18:56,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:56,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:18:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:56,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking...