/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=0.3 --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_i20_o20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:16:45,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:16:46,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:16:46,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:16:46,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:16:46,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:16:46,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:16:46,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:16:46,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:16:46,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:16:46,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:16:46,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:16:46,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:16:46,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:16:46,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:16:46,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:16:46,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:16:46,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:16:46,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:16:46,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:16:46,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:16:46,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:16:46,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:16:46,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:16:46,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:16:46,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:16:46,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:16:46,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:16:46,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:16:46,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:16:46,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:16:46,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:16:46,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:16:46,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:16:46,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:16:46,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:16:46,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:16:46,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:16:46,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:16:46,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:16:46,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:16:46,131 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 12:16:46,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:16:46,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:16:46,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:16:46,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:16:46,184 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:16:46,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:16:46,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:16:46,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:16:46,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:16:46,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:16:46,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:16:46,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:16:46,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:16:46,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:16:46,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:16:46,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:16:46,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:16:46,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:16:46,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:16:46,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:16:46,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:16:46,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:16:46,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:16:46,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:16:46,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:16:46,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:16:46,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:16:46,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:16:46,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:16:46,191 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:16:46,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:16:46,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:16:46,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:16:46,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:16:46,697 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:16:46,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-25 12:16:46,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6fed705d/d514e15965344c96b3fb970084de1a70/FLAGab6b5a8e3 [2020-09-25 12:16:47,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:16:47,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-25 12:16:47,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6fed705d/d514e15965344c96b3fb970084de1a70/FLAGab6b5a8e3 [2020-09-25 12:16:47,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6fed705d/d514e15965344c96b3fb970084de1a70 [2020-09-25 12:16:47,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:16:47,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:16:47,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:16:47,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:16:47,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:16:47,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:47,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47, skipping insertion in model container [2020-09-25 12:16:47,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:47,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:16:47,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:16:47,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:16:47,950 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:16:47,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:16:47,987 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:16:47,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47 WrapperNode [2020-09-25 12:16:47,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:16:47,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:16:47,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:16:47,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:16:48,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (1/1) ... [2020-09-25 12:16:48,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:16:48,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:16:48,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:16:48,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:16:48,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (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 12:16:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:16:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:16:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 12:16:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:16:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:16:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:16:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 12:16:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:16:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:16:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:16:48,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:16:48,373 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:16:48,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:16:48 BoogieIcfgContainer [2020-09-25 12:16:48,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:16:48,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:16:48,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:16:48,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:16:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:16:47" (1/3) ... [2020-09-25 12:16:48,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c8e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:16:48, skipping insertion in model container [2020-09-25 12:16:48,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:47" (2/3) ... [2020-09-25 12:16:48,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c8e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:16:48, skipping insertion in model container [2020-09-25 12:16:48,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:16:48" (3/3) ... [2020-09-25 12:16:48,413 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i20_o20-2.c [2020-09-25 12:16:48,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:16:48,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:16:48,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:16:48,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:16:48,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:16:48,528 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:16:48,528 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:16:48,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:16:48,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:16:48,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:16:48,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:16:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 12:16:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:16:48,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:48,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:48,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:48,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 12:16:48,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:48,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296193446] [2020-09-25 12:16:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:16:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 12:16:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:16:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:16:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:48,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:48,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:49,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:49,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:49,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:49,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:16:49,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:49,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:49,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:49,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:49,037 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 12:16:49,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296193446] [2020-09-25 12:16:49,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:16:49,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:16:49,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867587634] [2020-09-25 12:16:49,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:16:49,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:16:49,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:16:49,071 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 12:16:49,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:49,167 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 12:16:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:16:49,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:16:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:49,188 INFO L225 Difference]: With dead ends: 37 [2020-09-25 12:16:49,188 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 12:16:49,193 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 12:16:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 12:16:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 12:16:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 12:16:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 12:16:49,242 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 12:16:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:49,242 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 12:16:49,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:16:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 12:16:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 12:16:49,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:49,245 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 12:16:49,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:16:49,246 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 12:16:49,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:49,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895866811] [2020-09-25 12:16:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:49,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:49,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:16:49,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 12:16:49,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:49,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:16:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:16:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:49,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:49,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:49,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:49,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:49,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 12:16:49,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:49,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:49,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:16:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:49,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:49,920 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 12:16:49,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895866811] [2020-09-25 12:16:49,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:16:49,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685678615] [2020-09-25 12:16:49,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:16:49,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:49,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:16:49,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:16:49,925 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 12:16:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:50,001 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 12:16:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:50,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 12:16:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:50,003 INFO L225 Difference]: With dead ends: 34 [2020-09-25 12:16:50,004 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 12:16:50,007 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 12:16:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 12:16:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 12:16:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 12:16:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 12:16:50,025 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 12:16:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:50,026 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 12:16:50,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:16:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 12:16:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 12:16:50,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:50,028 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 12:16:50,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:16:50,028 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 12:16:50,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:50,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587102741] [2020-09-25 12:16:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:50,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:50,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 12:16:50,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 12:16:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:50,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 12:16:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:16:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:50,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:50,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:50,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:50,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:50,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:50,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:50,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:50,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 12:16:50,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:50,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:50,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:50,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:16:50,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:50,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:50,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:50,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:50,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:50,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:50,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:50,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:16:50,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:50,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:50,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 12:16:50,927 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 12:16:50,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587102741] [2020-09-25 12:16:50,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:50,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:50,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684411199] [2020-09-25 12:16:50,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:50,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:50,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:50,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:50,933 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 12:16:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:51,038 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 12:16:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:16:51,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 12:16:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:51,040 INFO L225 Difference]: With dead ends: 39 [2020-09-25 12:16:51,041 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 12:16:51,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:16:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 12:16:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 12:16:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 12:16:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 12:16:51,055 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 12:16:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:51,056 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 12:16:51,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 12:16:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 12:16:51,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:51,059 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 12:16:51,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:16:51,060 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 12:16:51,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:51,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506464720] [2020-09-25 12:16:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:51,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:51,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:16:51,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-09-25 12:16:51,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:51,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 12:16:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:16:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:52,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:52,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:52,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:52,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 12:16:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:52,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:52,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:52,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 12:16:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:52,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:52,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:52,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:52,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:16:52,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:52,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:52,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:52,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:52,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:16:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:52,420 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 12:16:52,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506464720] [2020-09-25 12:16:52,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:52,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:16:52,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636084020] [2020-09-25 12:16:52,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:16:52,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:52,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:16:52,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:16:52,427 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 12:16:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:52,533 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 12:16:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:16:52,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 12:16:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:52,536 INFO L225 Difference]: With dead ends: 44 [2020-09-25 12:16:52,537 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 12:16:52,537 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 12:16:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 12:16:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 12:16:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 12:16:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 12:16:52,551 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 12:16:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:52,551 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 12:16:52,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:16:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 12:16:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 12:16:52,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:52,557 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 12:16:52,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:16:52,558 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:52,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:52,558 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 12:16:52,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:52,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467176850] [2020-09-25 12:16:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:53,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:16:53,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1375 [2020-09-25 12:16:53,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:53,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:16:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 12:16:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:16:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:16:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:53,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:16:54,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:16:54,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:54,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:16:54,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:54,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 12:16:54,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:54,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 12:16:54,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:54,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:54,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:16:54,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:54,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:54,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:16:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:54,605 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 12:16:54,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467176850] [2020-09-25 12:16:54,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:54,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:16:54,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45572785] [2020-09-25 12:16:54,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:16:54,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:54,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:16:54,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:16:54,607 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 12:16:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:54,765 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 12:16:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:16:54,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 12:16:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:54,768 INFO L225 Difference]: With dead ends: 49 [2020-09-25 12:16:54,770 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 12:16:54,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:16:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 12:16:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 12:16:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 12:16:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 12:16:54,783 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 12:16:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:54,783 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 12:16:54,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:16:54,784 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 12:16:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:16:54,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:54,788 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 12:16:54,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:16:54,789 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:54,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 12:16:54,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:54,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940829939] [2020-09-25 12:16:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:16:56,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:56,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-09-25 12:16:56,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:16:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:16:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:16:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:56,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:56,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:16:57,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 12:16:57,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:16:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:16:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:16:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 12:16:57,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:16:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:57,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 12:16:57,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 12:16:57,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:57,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:16:57,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:57,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:57,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:57,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:16:57,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,734 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 12:16:57,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940829939] [2020-09-25 12:16:57,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:57,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:16:57,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934903734] [2020-09-25 12:16:57,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:16:57,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:16:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:16:57,737 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 12:16:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:57,909 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 12:16:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:16:57,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 12:16:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:57,912 INFO L225 Difference]: With dead ends: 54 [2020-09-25 12:16:57,912 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 12:16:57,913 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 12:16:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 12:16:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 12:16:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 12:16:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 12:16:57,921 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 12:16:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:57,922 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 12:16:57,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:16:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 12:16:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 12:16:57,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:57,924 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 12:16:57,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:57,925 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:57,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 12:16:57,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:57,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076486445] [2020-09-25 12:16:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:00,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:00,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:17:00,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2713 [2020-09-25 12:17:00,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:00,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:17:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 12:17:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:17:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:00,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:00,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:00,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:00,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:00,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:00,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:00,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:00,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:00,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:00,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:00,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:00,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:17:00,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:00,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 12:17:00,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:00,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:17:00,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:01,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 12:17:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:17:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:17:01,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 12:17:01,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:17:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:17:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:17:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:17:01,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:17:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:17:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:17:01,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:17:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:17:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:01,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:17:01,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,841 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 12:17:01,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076486445] [2020-09-25 12:17:01,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:01,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:17:01,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931912030] [2020-09-25 12:17:01,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:17:01,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:01,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:17:01,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:17:01,846 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 12:17:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:02,025 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 12:17:02,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 12:17:02,026 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 12:17:02,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:02,027 INFO L225 Difference]: With dead ends: 59 [2020-09-25 12:17:02,027 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 12:17:02,031 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 12:17:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 12:17:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 12:17:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 12:17:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 12:17:02,045 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 12:17:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:02,045 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 12:17:02,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:17:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 12:17:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 12:17:02,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:02,052 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 12:17:02,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:17:02,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 12:17:02,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:02,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984879377] [2020-09-25 12:17:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 12:17:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3438 [2020-09-25 12:17:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:17:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:17:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 12:17:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:17:05,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:17:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:17:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 12:17:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 12:17:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:06,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 12:17:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:17:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:17:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 12:17:06,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:17:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:17:06,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 12:17:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:17:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:17:06,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 12:17:06,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:17:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:06,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:17:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:17:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:17:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:06,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:06,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:06,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:17:06,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:06,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:17:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:07,022 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 12:17:07,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984879377] [2020-09-25 12:17:07,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:07,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:17:07,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115236170] [2020-09-25 12:17:07,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:17:07,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:07,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:17:07,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:17:07,025 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 12:17:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:07,193 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 12:17:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:17:07,194 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 12:17:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:07,195 INFO L225 Difference]: With dead ends: 64 [2020-09-25 12:17:07,195 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 12:17:07,196 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 12:17:07,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 12:17:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 12:17:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 12:17:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 12:17:07,203 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 12:17:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:07,203 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 12:17:07,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:17:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 12:17:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 12:17:07,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:07,205 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 12:17:07,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:17:07,205 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:07,206 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 12:17:07,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:07,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194498598] [2020-09-25 12:17:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 12:17:11,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4570 [2020-09-25 12:17:11,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:17:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:17:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 12:17:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:11,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:11,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 12:17:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 12:17:12,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:17:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:17:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:17:12,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 12:17:12,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:12,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:17:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:17:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:17:13,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 12:17:13,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:17:13,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 12:17:13,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:17:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:17:13,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:17:13,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:17:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:17:13,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:17:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:17:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:13,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:17:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,674 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 12:17:13,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194498598] [2020-09-25 12:17:13,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:13,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 12:17:13,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280097062] [2020-09-25 12:17:13,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 12:17:13,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 12:17:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:17:13,677 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 12:17:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:13,854 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 12:17:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 12:17:13,855 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 12:17:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:13,856 INFO L225 Difference]: With dead ends: 69 [2020-09-25 12:17:13,857 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 12:17:13,858 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 12:17:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 12:17:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 12:17:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 12:17:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 12:17:13,865 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 12:17:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:13,865 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 12:17:13,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 12:17:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 12:17:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 12:17:13,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:13,867 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 12:17:13,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:17:13,867 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 12:17:13,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:13,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243949028] [2020-09-25 12:17:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:18,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 12:17:19,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:17:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:17:20,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 12:17:20,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:17:20,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:17:20,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 12:17:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:17:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 12:17:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:17:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:17:20,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 12:17:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:17:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 12:17:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:17:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:17:20,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:17:20,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:17:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:17:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:17:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:17:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:17:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:21,142 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 12:17:21,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243949028] [2020-09-25 12:17:21,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:21,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 12:17:21,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550640239] [2020-09-25 12:17:21,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 12:17:21,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:21,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 12:17:21,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:17:21,144 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 12:17:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:21,413 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 12:17:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 12:17:21,413 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 12:17:21,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:21,415 INFO L225 Difference]: With dead ends: 74 [2020-09-25 12:17:21,415 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 12:17:21,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 12:17:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 12:17:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 12:17:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 12:17:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 12:17:21,424 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 12:17:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:21,424 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 12:17:21,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 12:17:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 12:17:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 12:17:21,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:21,426 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 12:17:21,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:17:21,426 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:21,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 12:17:21,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:21,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559274855] [2020-09-25 12:17:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:26,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:26,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:17:26,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:17:26,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:26,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 12:17:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 12:17:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:17:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:26,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 12:17:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-25 12:17:26,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:26,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:17:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:27,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:27,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:27,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-25 12:17:27,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:27,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:27,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 12:17:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:17:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:27,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:17:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:17:28,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 12:17:28,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:17:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:28,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 12:17:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:17:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:17:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 12:17:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:17:28,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:17:28,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:17:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:17:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:17:28,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:17:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:17:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:17:29,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:29,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:17:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:29,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:17:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:29,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:29,184 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 12:17:29,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559274855] [2020-09-25 12:17:29,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:29,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 12:17:29,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845066266] [2020-09-25 12:17:29,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 12:17:29,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:29,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 12:17:29,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:17:29,188 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 12:17:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:29,460 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 12:17:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 12:17:29,463 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 12:17:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:29,464 INFO L225 Difference]: With dead ends: 79 [2020-09-25 12:17:29,464 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 12:17:29,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 12:17:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 12:17:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 12:17:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 12:17:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 12:17:29,472 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 12:17:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:29,472 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 12:17:29,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 12:17:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 12:17:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 12:17:29,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:29,474 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 12:17:29,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:17:29,474 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:29,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:29,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 12:17:29,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:29,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875664874] [2020-09-25 12:17:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 12:17:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:17:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 12:17:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:34,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:17:34,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:35,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 12:17:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:35,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:35,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 12:17:35,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-09-25 12:17:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:35,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:17:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:36,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 12:17:36,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 12:17:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:17:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:17:37,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 12:17:37,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:17:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:37,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:17:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:17:37,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:17:37,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:17:37,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 12:17:37,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:17:37,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:17:37,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:17:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:17:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:38,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:17:38,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:17:38,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:38,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:17:38,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:38,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:17:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:38,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 12:17:38,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875664874] [2020-09-25 12:17:38,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:38,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 12:17:38,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808318898] [2020-09-25 12:17:38,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 12:17:38,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:38,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 12:17:38,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:17:38,188 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-25 12:17:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:38,458 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 12:17:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 12:17:38,458 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-25 12:17:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:38,459 INFO L225 Difference]: With dead ends: 84 [2020-09-25 12:17:38,459 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 12:17:38,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 12:17:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 12:17:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 12:17:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 12:17:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 12:17:38,466 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 12:17:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:38,467 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 12:17:38,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 12:17:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 12:17:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 12:17:38,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:38,468 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 12:17:38,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:17:38,469 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:38,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 12:17:38,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:38,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761639882] [2020-09-25 12:17:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:17:43,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:17:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:17:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 12:17:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:17:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:17:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:43,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:43,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:17:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking...