/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:25:49,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:25:49,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:25:49,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:25:49,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:25:49,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:25:49,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:25:49,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:25:49,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:25:49,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:25:49,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:25:49,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:25:49,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:25:49,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:25:49,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:25:49,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:25:49,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:25:49,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:25:49,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:25:49,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:25:49,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:25:49,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:25:49,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:25:49,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:25:49,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:25:49,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:25:49,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:25:49,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:25:49,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:25:49,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:25:49,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:25:49,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:25:49,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:25:49,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:25:49,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:25:49,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:25:49,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:25:49,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:25:49,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:25:49,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:25:49,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:25:49,148 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 05:25:49,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:25:49,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:25:49,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:25:49,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:25:49,197 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:25:49,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:25:49,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:25:49,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:25:49,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:25:49,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:25:49,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:25:49,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:25:49,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:25:49,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:25:49,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:25:49,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:25:49,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:25:49,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:25:49,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:25:49,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:25:49,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:25:49,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:25:49,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:25:49,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:25:49,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:25:49,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:25:49,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:25:49,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:25:49,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:25:49,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:25:49,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:25:49,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:25:49,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:25:49,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:25:49,677 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:25:49,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 05:25:49,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94eb13088/5bdf6b3d55a345908cb753cd2572c3b2/FLAG0d14cae14 [2020-09-25 05:25:50,293 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:25:50,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 05:25:50,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94eb13088/5bdf6b3d55a345908cb753cd2572c3b2/FLAG0d14cae14 [2020-09-25 05:25:50,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94eb13088/5bdf6b3d55a345908cb753cd2572c3b2 [2020-09-25 05:25:50,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:25:50,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:25:50,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:50,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:25:50,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:25:50,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50, skipping insertion in model container [2020-09-25 05:25:50,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:25:50,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:25:50,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:50,911 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:25:50,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:50,952 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:25:50,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50 WrapperNode [2020-09-25 05:25:50,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:50,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:25:50,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:25:50,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:25:50,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (1/1) ... [2020-09-25 05:25:50,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:25:50,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:25:50,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:25:50,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:25:50,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (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 05:25:51,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:25:51,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:25:51,135 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-25 05:25:51,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:25:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:25:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:25:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-25 05:25:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:25:51,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:25:51,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:25:51,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:25:51,422 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:25:51,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:51 BoogieIcfgContainer [2020-09-25 05:25:51,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:25:51,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:25:51,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:25:51,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:25:51,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:25:50" (1/3) ... [2020-09-25 05:25:51,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feeb94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:51, skipping insertion in model container [2020-09-25 05:25:51,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:50" (2/3) ... [2020-09-25 05:25:51,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feeb94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:51, skipping insertion in model container [2020-09-25 05:25:51,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:51" (3/3) ... [2020-09-25 05:25:51,453 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-25 05:25:51,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:25:51,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:25:51,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:25:51,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:25:51,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:25:51,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:25:51,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:25:51,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:25:51,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:25:51,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:25:51,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:25:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 05:25:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:25:51,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:51,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:51,551 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-25 05:25:51,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:51,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203067869] [2020-09-25 05:25:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:25:52,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:52,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-25 05:25:52,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:25:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:25:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:52,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:52,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:25:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:25:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:25:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:25:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:25:52,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203067869] [2020-09-25 05:25:52,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:52,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:25:52,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299687662] [2020-09-25 05:25:52,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:25:52,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:52,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:25:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:52,983 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 05:25:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:53,228 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 05:25:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:53,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-25 05:25:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:53,252 INFO L225 Difference]: With dead ends: 64 [2020-09-25 05:25:53,252 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 05:25:53,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 05:25:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 05:25:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:25:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 05:25:53,352 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-25 05:25:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:53,354 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 05:25:53,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:25:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 05:25:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:25:53,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:53,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:53,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:25:53,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:53,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-25 05:25:53,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:53,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108857692] [2020-09-25 05:25:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:25:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 05:25:53,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:25:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:25:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:25:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:53,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:25:53,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:25:53,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:53,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:25:53,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:53,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:25:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:25:53,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:25:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:25:53,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108857692] [2020-09-25 05:25:53,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:53,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:25:53,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851997932] [2020-09-25 05:25:53,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:25:53,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:53,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:25:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:53,657 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-25 05:25:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:53,735 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-25 05:25:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:53,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-25 05:25:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:53,738 INFO L225 Difference]: With dead ends: 51 [2020-09-25 05:25:53,738 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 05:25:53,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 05:25:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 05:25:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 05:25:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 05:25:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 05:25:53,750 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-25 05:25:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:53,750 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 05:25:53,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:25:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 05:25:53,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 05:25:53,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:53,753 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:53,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:25:53,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:53,754 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-25 05:25:53,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:53,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446427523] [2020-09-25 05:25:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:55,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:25:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:25:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-09-25 05:25:55,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:55,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:25:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:25:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:55,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:55,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:55,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:55,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:25:55,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:25:55,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:55,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:55,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:55,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:55,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:55,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:25:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:25:56,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:25:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 05:25:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:25:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:25:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:25:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:25:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:25:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:56,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 05:25:56,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446427523] [2020-09-25 05:25:56,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:56,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:25:56,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92898541] [2020-09-25 05:25:56,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:25:56,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:56,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:25:56,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:56,361 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 05:25:56,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:56,436 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 05:25:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:56,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-25 05:25:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:56,439 INFO L225 Difference]: With dead ends: 53 [2020-09-25 05:25:56,439 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 05:25:56,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 05:25:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 05:25:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-09-25 05:25:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:25:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-25 05:25:56,448 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 65 [2020-09-25 05:25:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:56,449 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-25 05:25:56,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:25:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-25 05:25:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 05:25:56,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:56,451 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:56,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:25:56,452 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:56,452 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-25 05:25:56,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:56,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535608012] [2020-09-25 05:25:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:25:57,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-25 05:25:57,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 05:25:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:25:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:25:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:57,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:57,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:57,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:25:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 05:25:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:25:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:25:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:57,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:25:57,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:25:57,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:25:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:25:57,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 05:25:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:25:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:25:57,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:25:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:25:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:25:58,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535608012] [2020-09-25 05:25:58,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:58,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 05:25:58,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067426618] [2020-09-25 05:25:58,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 05:25:58,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:58,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 05:25:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:25:58,225 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 17 states. [2020-09-25 05:25:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:58,853 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-09-25 05:25:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:25:58,854 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 05:25:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:58,857 INFO L225 Difference]: With dead ends: 68 [2020-09-25 05:25:58,857 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 05:25:58,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-25 05:25:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 05:25:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 05:25:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 05:25:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 05:25:58,886 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 56 [2020-09-25 05:25:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:58,887 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 05:25:58,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 05:25:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 05:25:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 05:25:58,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:58,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:58,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:25:58,893 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 2 times [2020-09-25 05:25:58,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:58,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828165511] [2020-09-25 05:25:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:26:01,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:26:01,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2603 [2020-09-25 05:26:01,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 05:26:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:26:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:01,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:01,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:26:01,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:26:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:26:01,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 05:26:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:26:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:26:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:26:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:26:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:26:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:26:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:26:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:01,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:01,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:01,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:26:01,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:01,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:26:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 05:26:01,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828165511] [2020-09-25 05:26:01,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:01,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:26:01,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747284871] [2020-09-25 05:26:01,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:26:01,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:01,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:26:01,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:26:01,894 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 6 states. [2020-09-25 05:26:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:01,999 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-09-25 05:26:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:26:02,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-09-25 05:26:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:02,002 INFO L225 Difference]: With dead ends: 85 [2020-09-25 05:26:02,002 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 05:26:02,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:26:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 05:26:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 05:26:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 05:26:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-09-25 05:26:02,017 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 65 [2020-09-25 05:26:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:02,020 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-09-25 05:26:02,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:26:02,020 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-09-25 05:26:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 05:26:02,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:02,022 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:02,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:26:02,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-25 05:26:02,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:02,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990392512] [2020-09-25 05:26:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:02,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:02,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:26:02,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-25 05:26:02,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:02,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 05:26:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:26:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:02,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:02,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:02,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:02,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:03,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:03,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 05:26:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:03,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:26:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:03,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:03,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:26:03,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:03,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:26:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:03,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:03,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:03,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-25 05:26:03,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:03,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:03,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:26:03,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:03,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:03,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:03,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:26:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:03,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 05:26:03,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990392512] [2020-09-25 05:26:03,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:03,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 05:26:03,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19908585] [2020-09-25 05:26:03,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 05:26:03,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:03,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 05:26:03,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:26:03,882 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 18 states. [2020-09-25 05:26:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:04,453 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-09-25 05:26:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:26:04,453 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 05:26:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:04,455 INFO L225 Difference]: With dead ends: 62 [2020-09-25 05:26:04,455 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:26:04,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-25 05:26:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:26:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 05:26:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:26:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-25 05:26:04,464 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 66 [2020-09-25 05:26:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:04,464 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-25 05:26:04,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 05:26:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-25 05:26:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 05:26:04,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:04,466 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:04,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:26:04,466 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-25 05:26:04,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:04,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065947110] [2020-09-25 05:26:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 05:26:05,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-09-25 05:26:05,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 05:26:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:26:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:05,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:05,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:26:05,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:26:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:26:05,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:26:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:06,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:06,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 05:26:06,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:06,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:26:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 05:26:06,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:06,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:06,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:06,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:06,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:26:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:06,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:06,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:06,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:06,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:06,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:26:06,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:06,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:26:07,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065947110] [2020-09-25 05:26:07,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:07,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 05:26:07,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623314074] [2020-09-25 05:26:07,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 05:26:07,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 05:26:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:26:07,021 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 21 states. [2020-09-25 05:26:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:07,757 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-09-25 05:26:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 05:26:07,758 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-09-25 05:26:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:07,761 INFO L225 Difference]: With dead ends: 56 [2020-09-25 05:26:07,761 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 05:26:07,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 05:26:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 05:26:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-09-25 05:26:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 05:26:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-25 05:26:07,775 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 76 [2020-09-25 05:26:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:07,775 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-25 05:26:07,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 05:26:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-25 05:26:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 05:26:07,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:07,777 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:07,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:26:07,778 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:07,778 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 5 times [2020-09-25 05:26:07,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:07,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139467694] [2020-09-25 05:26:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:08,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:08,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 05:26:08,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-09-25 05:26:08,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:08,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 05:26:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:26:08,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:08,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:08,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:08,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:08,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:08,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:08,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:09,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:09,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:09,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:09,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 05:26:09,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:09,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:26:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:09,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:09,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:26:09,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:09,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:09,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:09,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:09,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:09,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 05:26:09,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:09,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 05:26:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:09,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:09,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:09,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 05:26:09,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:09,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:09,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:09,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:09,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:09,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 05:26:09,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:09,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:09,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:09,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:09,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:26:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:09,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 05:26:09,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139467694] [2020-09-25 05:26:09,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:09,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:26:09,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648972035] [2020-09-25 05:26:09,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:26:09,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:09,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:26:09,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:26:09,970 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 16 states. [2020-09-25 05:26:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:10,448 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-09-25 05:26:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:26:10,448 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-09-25 05:26:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:10,449 INFO L225 Difference]: With dead ends: 62 [2020-09-25 05:26:10,449 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:26:10,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-09-25 05:26:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:26:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 05:26:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:26:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-25 05:26:10,459 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 76 [2020-09-25 05:26:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:10,460 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-25 05:26:10,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:26:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-25 05:26:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 05:26:10,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:10,461 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:10,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:26:10,461 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 6 times [2020-09-25 05:26:10,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:10,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458376161] [2020-09-25 05:26:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:26:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-09-25 05:26:11,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 05:26:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:26:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:11,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:11,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 05:26:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:26:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:26:11,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:26:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 05:26:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:26:11,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:11,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:11,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:26:11,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:11,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 05:26:11,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458376161] [2020-09-25 05:26:11,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:11,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 05:26:11,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429827580] [2020-09-25 05:26:11,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 05:26:11,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:11,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 05:26:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:26:11,951 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 18 states. [2020-09-25 05:26:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:12,459 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-09-25 05:26:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:26:12,460 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 05:26:12,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:12,461 INFO L225 Difference]: With dead ends: 62 [2020-09-25 05:26:12,461 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:26:12,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-09-25 05:26:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:26:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 05:26:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:26:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-09-25 05:26:12,468 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 66 [2020-09-25 05:26:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:12,468 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-09-25 05:26:12,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 05:26:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-09-25 05:26:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 05:26:12,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:12,469 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:12,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:26:12,470 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:12,470 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-25 05:26:12,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:12,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104655482] [2020-09-25 05:26:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 05:26:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-09-25 05:26:13,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:13,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 05:26:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:26:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:13,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:13,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:13,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:13,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:13,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:14,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:14,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:14,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:14,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 05:26:14,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:14,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:14,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:26:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:14,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:14,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:14,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:14,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 05:26:14,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:14,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:14,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:14,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:14,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:14,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:26:14,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:14,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:14,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 05:26:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:14,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:14,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:14,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:14,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-25 05:26:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:14,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:26:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:14,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:14,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 05:26:14,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:14,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:26:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:15,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:15,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:15,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:15,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:26:15,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:15,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 05:26:15,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104655482] [2020-09-25 05:26:15,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:15,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 05:26:15,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064536296] [2020-09-25 05:26:15,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 05:26:15,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:15,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 05:26:15,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-09-25 05:26:15,309 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 22 states. [2020-09-25 05:26:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:16,343 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-25 05:26:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 05:26:16,344 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 05:26:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:16,345 INFO L225 Difference]: With dead ends: 67 [2020-09-25 05:26:16,345 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 05:26:16,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:26:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 05:26:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 05:26:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 05:26:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-25 05:26:16,352 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 86 [2020-09-25 05:26:16,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:16,353 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-25 05:26:16,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 05:26:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-25 05:26:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 05:26:16,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:16,354 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:16,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:26:16,355 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:16,355 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-25 05:26:16,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:16,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393075129] [2020-09-25 05:26:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:17,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 05:26:17,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-09-25 05:26:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:17,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 05:26:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 05:26:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:18,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:18,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:18,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:18,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 05:26:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:18,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:26:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:18,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:18,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:18,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:26:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 05:26:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:26:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-25 05:26:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:19,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 05:26:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:26:19,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:19,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:19,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:19,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-25 05:26:19,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:19,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:26:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:19,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:19,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:19,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:19,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 05:26:19,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:19,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:19,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:19,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:26:19,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:19,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:20,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:20,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:26:20,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:20,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 05:26:20,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393075129] [2020-09-25 05:26:20,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:20,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 05:26:20,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466017557] [2020-09-25 05:26:20,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 05:26:20,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:20,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 05:26:20,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-09-25 05:26:20,130 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 24 states. [2020-09-25 05:26:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:21,283 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-09-25 05:26:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 05:26:21,284 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-25 05:26:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:21,285 INFO L225 Difference]: With dead ends: 72 [2020-09-25 05:26:21,285 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 05:26:21,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 05:26:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 05:26:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-25 05:26:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:26:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-09-25 05:26:21,294 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 96 [2020-09-25 05:26:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:21,294 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-09-25 05:26:21,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 05:26:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-09-25 05:26:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 05:26:21,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:21,296 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:21,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:26:21,296 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-25 05:26:21,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:21,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649703549] [2020-09-25 05:26:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:23,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:23,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 05:26:23,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1947 [2020-09-25 05:26:23,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:23,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 05:26:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 05:26:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:23,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:23,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:23,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:23,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:23,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:26:23,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:23,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:26:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 05:26:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:23,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:23,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:23,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:26:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 05:26:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:24,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 05:26:24,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-09-25 05:26:24,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:24,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 05:26:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:26:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:24,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:25,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:25,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:26:25,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 05:26:25,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:25,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 05:26:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:25,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:26:25,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:25,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-25 05:26:25,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:25,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:26:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:25,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:25,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:25,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 05:26:25,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:25,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:25,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:25,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:25,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:25,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 05:26:25,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:25,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:26,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:26,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:26:26,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:26,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 25 proven. 183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 05:26:26,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649703549] [2020-09-25 05:26:26,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:26,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 05:26:26,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103628037] [2020-09-25 05:26:26,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 05:26:26,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:26,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 05:26:26,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2020-09-25 05:26:26,312 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 27 states. [2020-09-25 05:26:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:27,834 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-09-25 05:26:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 05:26:27,834 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2020-09-25 05:26:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:27,836 INFO L225 Difference]: With dead ends: 77 [2020-09-25 05:26:27,836 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 05:26:27,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=2010, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 05:26:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 05:26:27,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-09-25 05:26:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 05:26:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-09-25 05:26:27,845 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 106 [2020-09-25 05:26:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:27,845 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-09-25 05:26:27,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 05:26:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-09-25 05:26:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 05:26:27,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:27,847 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:27,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:26:27,847 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:27,848 INFO L82 PathProgramCache]: Analyzing trace with hash 275016086, now seen corresponding path program 10 times [2020-09-25 05:26:27,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:27,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017585880] [2020-09-25 05:26:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:28,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 05:26:28,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-25 05:26:28,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:28,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 05:26:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:26:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:28,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:28,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:28,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:28,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:28,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:29,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 05:26:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:29,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:26:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:29,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:29,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:29,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 05:26:29,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:29,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:29,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:29,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:29,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:26:29,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:29,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:29,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:29,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:29,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:29,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:26:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:29,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:26:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:29,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:29,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:29,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:29,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:26:29,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:29,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:29,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:29,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:29,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:29,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:26:29,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:26:29,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017585880] [2020-09-25 05:26:29,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:29,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 05:26:29,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50554405] [2020-09-25 05:26:29,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 05:26:29,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:29,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 05:26:29,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2020-09-25 05:26:29,909 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 22 states. [2020-09-25 05:26:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:30,776 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2020-09-25 05:26:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 05:26:30,776 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2020-09-25 05:26:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:30,778 INFO L225 Difference]: With dead ends: 81 [2020-09-25 05:26:30,778 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 05:26:30,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:26:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 05:26:30,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-09-25 05:26:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 05:26:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-09-25 05:26:30,789 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 76 [2020-09-25 05:26:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:30,790 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-09-25 05:26:30,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 05:26:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-09-25 05:26:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 05:26:30,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:30,792 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:30,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:26:30,792 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash -412591530, now seen corresponding path program 11 times [2020-09-25 05:26:30,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:30,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329552282] [2020-09-25 05:26:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:33,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:33,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 05:26:33,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:33,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2189 [2020-09-25 05:26:33,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:33,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-09-25 05:26:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 05:26:33,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:33,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:33,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:33,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 05:26:33,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:33,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:26:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:26:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:26:33,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:26:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:26:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:33,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 05:26:33,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:33,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:26:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:26:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:33,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:26:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:26:33,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:33,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:26:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:34,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:34,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 05:26:34,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:34,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-09-25 05:26:34,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:34,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:34,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 05:26:34,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:26:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 05:26:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:26:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:35,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:35,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:26:35,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 05:26:35,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:35,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:26:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:26:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking...