/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:01:41,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:01:41,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:01:41,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:01:41,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:01:41,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:01:41,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:01:41,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:01:41,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:01:41,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:01:41,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:01:41,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:01:41,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:01:41,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:01:41,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:01:41,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:01:41,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:01:41,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:01:41,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:01:41,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:01:41,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:01:41,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:01:41,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:01:41,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:01:41,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:01:41,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:01:41,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:01:41,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:01:41,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:01:41,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:01:41,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:01:41,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:01:41,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:01:41,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:01:41,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:01:41,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:01:41,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:01:41,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:01:41,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:01:41,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:01:41,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:01:41,838 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 10:01:41,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:01:41,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:01:41,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:01:41,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:01:41,888 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:01:41,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:01:41,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:01:41,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:01:41,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:01:41,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:01:41,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:01:41,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:01:41,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:01:41,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:01:41,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:01:41,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:01:41,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:01:41,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:01:41,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:01:41,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:01:41,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:01:41,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:01:41,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:01:41,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:01:41,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:01:41,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:01:41,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:01:41,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:01:41,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:01:41,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:01:42,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:01:42,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:01:42,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:01:42,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:01:42,372 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:01:42,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 10:01:42,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab790db71/a032780c02dc4ea2afceedefd13d9022/FLAGea5bce13a [2020-09-25 10:01:42,961 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:01:42,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 10:01:42,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab790db71/a032780c02dc4ea2afceedefd13d9022/FLAGea5bce13a [2020-09-25 10:01:43,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab790db71/a032780c02dc4ea2afceedefd13d9022 [2020-09-25 10:01:43,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:01:43,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:01:43,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:43,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:01:43,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:01:43,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fcb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43, skipping insertion in model container [2020-09-25 10:01:43,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:01:43,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:01:43,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:43,643 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:01:43,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:43,672 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:01:43,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43 WrapperNode [2020-09-25 10:01:43,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:43,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:01:43,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:01:43,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:01:43,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (1/1) ... [2020-09-25 10:01:43,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:01:43,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:01:43,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:01:43,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:01:43,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (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 10:01:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:01:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:01:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 10:01:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:01:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:01:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:01:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 10:01:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:01:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:01:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:01:44,039 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:01:44,039 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:01:44,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:44 BoogieIcfgContainer [2020-09-25 10:01:44,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:01:44,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:01:44,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:01:44,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:01:44,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:01:43" (1/3) ... [2020-09-25 10:01:44,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4808ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:44, skipping insertion in model container [2020-09-25 10:01:44,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:43" (2/3) ... [2020-09-25 10:01:44,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4808ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:44, skipping insertion in model container [2020-09-25 10:01:44,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:44" (3/3) ... [2020-09-25 10:01:44,059 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-25 10:01:44,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:01:44,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:01:44,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:01:44,147 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:01:44,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:01:44,148 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:01:44,148 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:01:44,148 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:01:44,149 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:01:44,149 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:01:44,149 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:01:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 10:01:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:01:44,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:44,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:44,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:44,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 10:01:44,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:44,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493134845] [2020-09-25 10:01:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:44,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:01:44,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 10:01:44,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:44,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:44,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:44,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:01:44,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-25 10:01:44,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:01:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:44,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:44,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:44,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:01:44,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:44,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:44,742 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 10:01:44,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493134845] [2020-09-25 10:01:44,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:44,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:01:44,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291668757] [2020-09-25 10:01:44,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:01:44,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:44,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:01:44,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:01:44,772 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 10:01:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:44,844 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 10:01:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:01:44,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:01:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:44,861 INFO L225 Difference]: With dead ends: 37 [2020-09-25 10:01:44,861 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 10:01:44,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 10:01:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 10:01:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 10:01:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 10:01:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 10:01:44,927 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 10:01:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:44,927 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 10:01:44,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:01:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 10:01:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 10:01:44,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:44,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:44,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:01:44,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:44,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 10:01:44,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:44,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374062402] [2020-09-25 10:01:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:01:45,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 10:01:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:01:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:01:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:45,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:01:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:45,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:01:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:01:45,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374062402] [2020-09-25 10:01:45,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:45,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:01:45,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467415820] [2020-09-25 10:01:45,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:01:45,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:01:45,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:01:45,515 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 10:01:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:45,577 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 10:01:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:01:45,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 10:01:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:45,579 INFO L225 Difference]: With dead ends: 34 [2020-09-25 10:01:45,580 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 10:01:45,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 10:01:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 10:01:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 10:01:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 10:01:45,598 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 10:01:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:45,599 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 10:01:45,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:01:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 10:01:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:01:45,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:45,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:45,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:01:45,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:45,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 10:01:45,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:45,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285265385] [2020-09-25 10:01:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 10:01:46,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 10:01:46,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 10:01:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:01:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:01:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:01:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:01:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:01:46,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285265385] [2020-09-25 10:01:46,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:46,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:01:46,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738417486] [2020-09-25 10:01:46,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:01:46,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:46,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:01:46,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:46,261 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 10:01:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:46,335 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 10:01:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:01:46,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 10:01:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:46,337 INFO L225 Difference]: With dead ends: 39 [2020-09-25 10:01:46,337 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 10:01:46,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:01:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 10:01:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 10:01:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 10:01:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 10:01:46,345 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 10:01:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:46,346 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 10:01:46,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:01:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 10:01:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:01:46,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:46,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:46,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:01:46,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:46,349 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 10:01:46,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:46,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859222672] [2020-09-25 10:01:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:01:47,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-09-25 10:01:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:47,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 10:01:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:01:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:47,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:47,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:47,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:47,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:47,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:47,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 10:01:47,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:47,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:47,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:47,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:01:47,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:47,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:47,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:47,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:01:47,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:47,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:47,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:47,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:01:47,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:47,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 10:01:47,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859222672] [2020-09-25 10:01:47,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:47,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:47,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401888463] [2020-09-25 10:01:47,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:47,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:47,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:47,678 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 10:01:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:47,794 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 10:01:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:01:47,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 10:01:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:47,798 INFO L225 Difference]: With dead ends: 44 [2020-09-25 10:01:47,798 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 10:01:47,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:01:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 10:01:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 10:01:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 10:01:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 10:01:47,811 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 10:01:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:47,811 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 10:01:47,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 10:01:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 10:01:47,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:47,816 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:47,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:01:47,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 10:01:47,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:47,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167372960] [2020-09-25 10:01:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:01:49,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:49,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-09-25 10:01:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:01:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 10:01:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:01:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:49,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:49,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:49,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 10:01:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:49,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 10:01:49,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:49,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 10:01:49,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:01:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:01:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 10:01:49,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167372960] [2020-09-25 10:01:49,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:49,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:01:49,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543940434] [2020-09-25 10:01:49,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:01:49,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:49,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:01:49,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:01:49,830 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 10:01:49,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:49,971 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 10:01:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:01:49,971 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 10:01:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:49,973 INFO L225 Difference]: With dead ends: 49 [2020-09-25 10:01:49,973 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 10:01:49,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:01:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 10:01:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 10:01:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 10:01:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 10:01:49,981 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 10:01:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:49,982 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 10:01:49,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:01:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 10:01:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:01:49,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:49,984 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:49,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:01:49,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:49,985 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 10:01:49,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:49,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118311313] [2020-09-25 10:01:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:51,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:01:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1943 [2020-09-25 10:01:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:51,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:01:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:01:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:01:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:51,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:51,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:51,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:51,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:51,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 10:01:52,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:01:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 10:01:52,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:52,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 10:01:52,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:01:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:01:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:01:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 10:01:52,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118311313] [2020-09-25 10:01:52,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:52,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:01:52,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054834889] [2020-09-25 10:01:52,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:01:52,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:52,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:01:52,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:01:52,766 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 10:01:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:52,938 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 10:01:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:01:52,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 10:01:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:52,942 INFO L225 Difference]: With dead ends: 54 [2020-09-25 10:01:52,942 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 10:01:52,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:01:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 10:01:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 10:01:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 10:01:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 10:01:52,950 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 10:01:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:52,950 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 10:01:52,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:01:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 10:01:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:01:52,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:52,952 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:52,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:01:52,952 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 10:01:52,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:52,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437588832] [2020-09-25 10:01:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:55,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:01:55,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:55,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2616 [2020-09-25 10:01:55,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:55,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:01:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 10:01:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:01:55,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:55,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:55,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:55,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:55,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:55,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:55,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:55,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:55,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:01:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 10:01:55,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:55,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:01:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:01:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:55,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:56,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:56,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 10:01:56,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:56,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:56,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:01:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:56,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:56,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 10:01:56,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:56,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:56,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:56,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:56,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 10:01:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:56,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:56,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:01:56,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:56,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:56,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:56,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:56,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:01:56,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:56,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:56,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:56,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:56,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:56,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:01:56,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:56,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 10:01:56,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437588832] [2020-09-25 10:01:56,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:56,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:01:56,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919162248] [2020-09-25 10:01:56,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:01:56,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:56,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:01:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:01:56,711 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 10:01:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:56,870 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 10:01:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:01:56,871 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 10:01:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:56,872 INFO L225 Difference]: With dead ends: 59 [2020-09-25 10:01:56,872 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 10:01:56,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:01:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 10:01:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 10:01:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 10:01:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 10:01:56,880 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 10:01:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:56,880 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 10:01:56,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:01:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 10:01:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 10:01:56,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:56,882 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:56,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:56,882 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:56,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 10:01:56,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:56,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784476711] [2020-09-25 10:01:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 10:02:00,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-09-25 10:02:00,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:02:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:02:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:02:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:00,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:00,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:00,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 10:02:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:02:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:02:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:02:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 10:02:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:02:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 10:02:01,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:02:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 10:02:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:02:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:01,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 10:02:01,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:02:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:01,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 10:02:01,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:02:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:01,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:02:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:02:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:01,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:01,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:02:01,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:02:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 131 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 10:02:01,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784476711] [2020-09-25 10:02:01,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:01,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:02:01,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827640159] [2020-09-25 10:02:01,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:02:01,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:01,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:02:01,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:02:01,718 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 10:02:01,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:01,902 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 10:02:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:02:01,903 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 10:02:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:01,905 INFO L225 Difference]: With dead ends: 64 [2020-09-25 10:02:01,905 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 10:02:01,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:02:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 10:02:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 10:02:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 10:02:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 10:02:01,913 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 10:02:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:01,913 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 10:02:01,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:02:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 10:02:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 10:02:01,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:01,915 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:01,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:02:01,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 10:02:01,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:01,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984084136] [2020-09-25 10:02:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 10:02:06,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4353 [2020-09-25 10:02:06,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:02:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 10:02:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 10:02:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:06,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:02:06,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 10:02:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:02:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:07,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 10:02:07,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:02:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:07,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 10:02:07,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:02:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 10:02:07,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:02:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:07,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 10:02:07,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:02:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:07,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 10:02:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:02:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:07,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 10:02:07,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:02:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:08,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:08,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:08,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:02:08,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:08,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:02:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:08,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:08,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:08,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:08,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:02:08,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:08,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 10:02:08,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984084136] [2020-09-25 10:02:08,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:08,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:02:08,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046572318] [2020-09-25 10:02:08,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:02:08,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:08,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:02:08,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:02:08,149 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 10:02:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:08,355 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 10:02:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:02:08,355 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 10:02:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:08,361 INFO L225 Difference]: With dead ends: 69 [2020-09-25 10:02:08,361 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 10:02:08,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:02:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 10:02:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 10:02:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 10:02:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 10:02:08,375 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 10:02:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:08,376 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 10:02:08,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:02:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 10:02:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 10:02:08,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:08,379 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:08,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:02:08,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 10:02:08,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:08,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104304488] [2020-09-25 10:02:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:13,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:13,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 10:02:13,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:13,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:02:13,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:13,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:02:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 10:02:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:02:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:13,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:02:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:13,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:13,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:13,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:13,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 10:02:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:13,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:13,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:02:14,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:02:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:14,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 10:02:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:02:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:14,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:14,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 10:02:14,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:02:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 10:02:15,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:15,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:02:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:15,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:15,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:15,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:15,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 10:02:15,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:15,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:02:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:15,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:15,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:15,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 10:02:15,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:15,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:02:15,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:15,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:15,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:15,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 10:02:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:15,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:02:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:15,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:02:15,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:15,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:02:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:02:15,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:15,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 10:02:15,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104304488] [2020-09-25 10:02:15,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:15,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:02:15,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090384379] [2020-09-25 10:02:15,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:02:15,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:15,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:02:15,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:02:15,651 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 10:02:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:15,846 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 10:02:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 10:02:15,846 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 10:02:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:15,848 INFO L225 Difference]: With dead ends: 74 [2020-09-25 10:02:15,848 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 10:02:15,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 10:02:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 10:02:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 10:02:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 10:02:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 10:02:15,855 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 10:02:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:15,856 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 10:02:15,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:02:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 10:02:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 10:02:15,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:15,857 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:15,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:02:15,857 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 10:02:15,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:15,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437617371] [2020-09-25 10:02:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:20,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:20,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 10:02:20,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:02:20,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:20,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 10:02:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 10:02:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:02:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:20,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:20,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:21,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:21,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 10:02:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:21,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:21,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:21,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:21,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-25 10:02:21,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:21,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:21,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:21,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:21,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:22,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:22,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:02:22,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-25 10:02:22,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:22,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:02:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:22,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:22,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:22,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:02:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:22,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:22,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:22,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 10:02:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:22,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:02:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:22,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:02:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:23,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 10:02:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:02:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:23,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:02:23,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:02:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:23,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:02:23,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:23,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:02:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:23,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:02:23,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:02:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:23,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:02:23,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 10:02:23,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437617371] [2020-09-25 10:02:23,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:23,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 10:02:23,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870070284] [2020-09-25 10:02:23,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 10:02:23,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:23,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 10:02:23,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:02:23,566 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 10:02:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:23,821 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 10:02:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 10:02:23,822 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 10:02:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:23,823 INFO L225 Difference]: With dead ends: 79 [2020-09-25 10:02:23,823 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 10:02:23,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:02:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 10:02:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 10:02:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 10:02:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 10:02:23,831 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 10:02:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:23,832 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 10:02:23,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 10:02:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 10:02:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 10:02:23,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:23,833 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:23,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:02:23,833 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 10:02:23,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:23,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365334848] [2020-09-25 10:02:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:28,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 10:02:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:02:28,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:28,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 10:02:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:02:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:02:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:28,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:28,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:28,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:28,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:28,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:29,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:02:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:02:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:30,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:30,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 10:02:30,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-09-25 10:02:30,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:30,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:02:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 10:02:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:30,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:30,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:30,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 10:02:30,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:30,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:02:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 10:02:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:30,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:02:31,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-25 10:02:31,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 10:02:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:31,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 10:02:31,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:31,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 10:02:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:02:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:32,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:32,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 10:02:32,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:32,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:02:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:32,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:32,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:32,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 10:02:32,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:32,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:02:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:32,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:32,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:02:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:32,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:02:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:32,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:32,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:32,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:32,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 10:02:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:32,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:32,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:32,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:02:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:32,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:32,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:32,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:02:32,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:32,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:02:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:32,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:02:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:32,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:02:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 38 proven. 325 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-09-25 10:02:32,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365334848] [2020-09-25 10:02:32,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:32,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:02:32,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462684771] [2020-09-25 10:02:32,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:02:32,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:02:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:02:32,838 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 17 states. [2020-09-25 10:02:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:33,052 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 10:02:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:02:33,052 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2020-09-25 10:02:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:33,054 INFO L225 Difference]: With dead ends: 84 [2020-09-25 10:02:33,054 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 10:02:33,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:02:33,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 10:02:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 10:02:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 10:02:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 10:02:33,068 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 10:02:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:33,069 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 10:02:33,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:02:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 10:02:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 10:02:33,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:33,071 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:33,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:02:33,072 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 10:02:33,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:33,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030777628] [2020-09-25 10:02:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:38,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:38,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:02:38,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:02:38,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:38,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 10:02:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:02:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:02:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:38,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:38,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:38,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:38,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:38,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking...